Hey Collin let's see if we can help you with your questions.
Body suit, straps and rigging check with Teresa -
Glue? E600 or CA should work just fine with 850's kit but taking a look at some build threads (mentioned below) may help you decide.
Paint? How deep does your wallet go. You can go with spray can or professional.
R1 experience - Visit the R1 section where you'll find build threads and more - https://www.whitearmor.net/forum/forum/162-rogue-one/
Hope this helps