The Outlaw is a very solid unit and I don't believe you will have any regrets with it!
However, I will throw out another idea, since you are being so thorough in your selection.
Understand that I am not categorically suggesting this as "better", rather it is an option to consider. The choice should be determined by your objectives and inclinations!
For $280, you can get one of these.
http://www.accessories4less.com/make-a-store/item/marnr1504/marantz-nr1504-slimline-5.1-ch-x-50-watts-networking-a/v-receiver/1.html
Pros:
1) With stereo pre-outs, this makes for an inexpensive pre-amp which includes some interesting features.
2) It includes amplification, so you could add a stronger amp on your own time-table. The amp is rated at 50 WRMS, but since it is a 5 channel amp, it should do well for higher current demands (but certainly not so rigorous as the Outlaw).
3) Has Audyssey MultEQ, which most of us agree assists with optimizing the integration and setup of sub.
4) Has Audyssey DynamicEQ, which most of us (if not everyone) like. I think of this as what a loudness control should be/do!
5) As an AVR, it allows a transition into HT (or a music system that allows you to watch TV) if that has any value to you. You can add the additional 3 channels, but don't think this would improve your music experience - only if you are playing one of the very few properly mastered DVD/BD 5.1 channel recordings of a performance. Stereo is still the format of music.
6) Ability to control the level of the sub via the R/C (although you have to go into menu system and need TV to see). I find the bass is heavy on some recordings I like.
7) For me, adding an inexpensive Smart TV (see below) has great value. Assuming you have a basic internet connection, you can set up a free Pandora account (with occasional commercials) and have music streaming into your home. Pandora is not the very highest quality format, but it is such a good way to discover new music based on your preferences
and its free!!! (you tell it what music you like and it starts feeding you that music plus other similar artists. If you especially like or dislike a song, you give it thumbs up or thumbs down and it modifies your play list accordingly)
Neutral:
1) Eco mode reduces operating temperature by 10 degrees, but I'd guess having a video processor increases the temperature by (10 or more) degrees, so that is a wash. For longevity, I'd go with the Outlaw
Cons:
1) A TV is really recommended to assist with setup and navigating menus (but for $140 you can buy something like this which may be useful, depending on the room/use). With the smart tv, aside from Netflix and Hulu, you can access youTube videos of your favorite groups and play them over your system (audio Quality is a mixed bag depending on who posted the clip).
https://www.walmart.com/ip/VIZIO-D24-D1-24-1080p-60Hz-LED-Smart-HDTV/49239323
2) Added complexity of simple operations like adjusting the Bass or Treble via menu (the Marantz is like most modern car stereos vs the simple knobs on the Outlaw).
3) Complexity and heat make me subjectively think of the AVR as an item with a 7-10 year lifespan, while I would put the Outlaw around 20. Understand there is no fact behind this statement; however, there certainly is more to fail in the Marantz.
More pros than cons, but the longevity is one item which may be very important to you.
If that has appeal, you might also consider one of these and forget about external amplification. This has tested out very well as a stereo amplifier (and I must admit, to me this is a great looking unit, which matters

):
http://www.accessories4less.com/make-a-store/item/marsr6009/marantz-sr6009-7.2-ch-x-110-watts-networking-a/v-receiver/1.html
Another option is to get the Emotiva PT-100 (or any stereo pre-amp) and pair it with one of these:
http://www.sweetwater.com/store/detail/XLS1002
The trick here is the Crown Pro-audio amp has band-pass filters which will allow you to set up a high-pass filter at 60Hz for the amp/mains to compliment the low pass crossover on your sub (also set to 60Hz).
As a pro audio amp, these are built to take a beating and durability should be excellent in a consumer environment! Also, the cooling system in this unit and remote trigger will allow you to stick it almost anywhere if you want it out of sight for cleaner look.
Those are all of the options I know of that are worth consideration.
Hopefully this will help you to decide what you want/need. Several ways to skin this cat, but unfortunately, you can't get the integrated look of the Emo Amp and Pre without sacrificing the benefits of off-loading the bass from your towers. How important is this bass management? I believe you would hear a clear difference if you could A-B them, but don't think you are going to be distracted by anything sounding wrong if you went without.