Warning: It's addictive! I've got a Doopy/Hasbro conversion, a Doopy's full resin and a Hyperfirm from Sci-Fire. I'm now working to obtain a Sterling and convert it.
Welcome to the FISD! I'm very close to your size at 6"2 and 165lbs and do the ANH Stormtrooper. I sport the AP armor with an MTK helmet from Mike at Trooperbay. The ATA and AM armor are not a bad choice, but you have options.
Welcome to the FISD! Most of the troopers here are ready, willing, and able to help. Just read through some of the links provided above and reach out to ask questions. We're all friendly here and will help you get going.
I have the 10W Aker + iComm setup from TK-6294 (Jim S). It's awesome. I paired it up with a small MP3 player and play the 501st TK loop through the amp along with the static burst for my voice. Well worth the investment.
I have a Cushman, but the pull was terrible. I put a lot of work into it and made it better but would not refer anyone to them. My Sci-fire DLT from Lewis is a work of art. Get one, you won't be sorry.