Deaver is usually too expensive. you're crazy not to to with Alcan unless other companies can back the same customer service and warranty. Alcan is a top notch company and customer service is some of the best I've experienced.
I've had 3 sets of theirs so far and each one was dead on for what I wanted/needed.
absolutely do a military wrap.
been there, done that
can't speak for the shops in your area, but I've dealt with "local" custom leaf spring shops and most of them truly have no idea what they are doing when it comes to offroad performance and what specs are needed.