At this stage of the game, anyone who knows what their doing, what all the options are for your room/system, knows acoustics front to back, understands your associated gear and life-style - and how all that plays in with the setup and room acoustics - will be far ahead of where you are, knowledge-wise! Basically, hiring someone is going to "get you there" much more likely than simply doing it yourself, with limited knowledge and experience with all this stuff.
On that note, at the very least, Rives will be able to work with you on your room acoustics, setup, and likely knows what would be best with your gear, room, and life-style (which, BTW, includes listening habits, types of music, social life-style, number of seating options, etc)
I've talked to Richard on many occasions in the past, and he knows what he is doing, at the very least on setting up 2 channel systems, yes.
If it were me, my experience however suggests you need to have someone come out and go through the complete system, do extensive tinkering, listening, and experimenting with all your variables, and dialing it all in! Simply having someone draw you some diagrams/blue-prints, and then possibly coming over for a couple of hours and taking a measurement, and having "a listen", isn't enough! When I spend time setting up rooms, I start from scratch (considering pre-existing room structure) with the speakers and listening seat(s), get everything engineered for best fundamentals, THEN I do the acoustics around that foundation, then the fine-tunning of the system!
Can't really remember the last 2 channel system I did that didn't take me less than 12 hours to simply place some basic treatments, move speakers and listening position(s) around, dial all that in, and go through the system for noise, EQ, phase, whatever. You can litterally spend days going over every single issue from fundamental response from the listening position, loud speaker toe-in, aim, image height and perspective, sound staging and balance of soundstage width, for imaging - image tightness, presence, proper tonality - room reverb, dealing with all the acoustical issues (slap echo, first and second order reflections, base modes - dips, peaks - etc), sound/noise considerations, dealing with system hums, and on and on!
Bottom line, is theres a lot of considerations for dialing in your race car for the track your driving on, given all the variables that even a basic 2 channel system consists of.
I guess what I'm saying is that I think the most effective Rives proposition is going to be the more full scale system package, where they come out and do some actual hands on tweaking - on top of actual acoustic design, recommendations and consulting.
Um, so yeah, Rives would be better than most you're likely aware of out there. They do professional work...recommended