"slater"....slow down, you are over thinking the issue.
You do not have to get a "bundle" to get the equipment you want. The Denon receiver alone is a nice full feature receiver all by itself. Onkyo, Yamaha, and Pioneer also make nice receivers....in a dark room and listening only I doubt you could tell them apart. It's the speakers that make the biggest difference in the listening experience and small speakers in a large volume room will never create any kink of surround sound field...they will always be small speaker point sources.
If you can't use towers...what will the bookshelf style speakers sit on.
If you have to "keep it clean", consider on-wall speakers. They will also be a bit of a compromise because they get their flatter profile using smaller drivers, but they can work better than tiny satellite speakers.
this may be a little small for the room, but with a 30 day return period (keep all the shipping material) you can try it and see. 20% off until end of month with coupon MOST15.
http://www.thespeakercompany.com/TS2132T-HT-P128C35.aspx
another option, but much more expensive
www.definitivetech.com and search for "Pro Cinema 800" speaker set