Construction Question

Just know, that's there's so much to know! In terms of "performance" aspect of the theater - in regards to construction, room acoustics, sound-isolation, noise control HVAC system design (noise and ventilation factors) system power distribution, layout, speaker/seating placements within the space, style of seating, equipment selection, cabling, equipment isolation (can degrade system performance if not done right), just to name a few! Just know, that if you're doing everything yourself in terms of the selection and design process, that you're going to be compounding shorfalls likely! Many of us have been in and around, as well as doing this stuff for decades - AND WE'RE STILL LEARNING SOMETHING NEW ALL THE TIME!!! Therefore, just don't expect to "hit it out of the part" on all the issues and choices you'll make, going the DIY route! That's the way it is.
However, if the joy of going that route is the ultimate pleasure project for you, that's another story. Just know that you won't know how it ALL fits together like a professional with a proven track record, if you forgo getting professional assistance.
Seen it hundreds of times over the years. These are constants really.
Infact, I would EVERY TIME recommend to someone who had a reasonable budget- and was going to DIY as a novice/enthusiest - that they even consider downgrading their equipment selection potential choice, and spend the rest of professional help! The end result will most always yield you far better results than if you spend the money on the gear, and don't get some consulting and help. FYI
Choices...

In fact, not only have I fixed nightmare systems that so-called "seasoned expert installers/integrators" have designed and installed, but I've been to homes of enthusiests who've built dedicated custom theater spaces from scratch (like your doing), who actually ended up having their theater rooms displayed in major magazine publications! - only to asses all the major flaws, short-comings, serious issues, and bad choices they made, and knowing how they could have done several hundred percent better on the results, in literally dozens of areas!!!
So, I'm not trying to rain on the party. Infact, I encourage and applaud the effort! I personally however, like above-par, stellar, even world class results from custom theater ambitions. And I know what it takes to achieve that...years and years of knowledge, experience, and trial and error.
good luck

To me..the fun is in the learning.The research,trials and errors.Besides the upgrading along the way is a blast.I'm well aware of how difficult this will be.But my wife gave me the keys to this project "the only 1 in the house of course".So I plan to drive the crap out of it.And in the end..It's my idea done my way..Not someone else's vision of what they think I want.

"Not someone else's vision of what they think I want." (Ralphnoonan)

What they think you want? No. Actually you would work WITH THEM, and you would tell them EXACTLY what you want - and they would give you all the variables, options, potential and likely realized results, applications, avenues, choices, etc! In, the end, it would your your vision, mixed with their experiences. Hopefully, you would curb your choices based on their warnings on potential pit-falls - and maybe use their recommendations to help mold YOUR vision!
I personally don't think getting someone else's guidance and assistance would mean having THEIR VISION, AND NOT YOURS! (I mean if you don't want anyone else's vision -as you say - then why are you asking other people's opinion and help, if you say you only want YOUR VISION!!! I'm confused)
Remember, team work is a an extremely valuable option (Note: Michael Jordan lost a 2-on-1 half-court b-ball match up in the 80's vs. Charlie and Martin Sheen - and Jordan was the best there ever was!).
Just some input here.
Good luck on your project

Flrnlamb..I just want to build a theater.I don't want to pay someone to do it,or to work with me.If that's what I wanted I would've asked that.My question is still the same."Looking to read about the building of a theater via online or mag..Maybe find some different idea's".I appreciate your view,but it never really answered my question.