I know the temptation to go separate, been there, done that myself twice (AV7005 and AV8801). That being said, if you don't need the IMAX enhanced feature, balanced connections and 7.1 analog inputs, the Denon AVR-X4400H is still available for $799, brand new and will do the same for you when used as a prepro, but of course only in a DBT comparison.
As above, but if you believe you can hear the HDAM difference (I cannot) and that it is noticeably better, then you may want to consider the SR7012 that is still available for around $1200 brand new.
In either case, set Eco to "On", because you are going to use external amp anyway, you can just pretend the SR7012/AVR-X4400H are AV7704.
If you need the IMAX feature, then I suggest you wait a few months for the SR7013 to be on blow out sale, if history repeats itself (based on the price trend of the SR7012),between October 2019 and Jan 2020, the SR7013 should hit $999 (the SR7012 did).
I just don't see any other reason to go for the AV7703/04/05, they have the same parts and circuitry, except for the balanced connections and less jam-packed obviously, but the cleaner layout did not translate into any measurable benefits based on bench test results of their pass prepros vs AVRs.