I run 31 bfg's and have for 3 sets of tires never had issue with balance or keeping balance. If your rig not lifted don't think those tire/ wheels will fit? Check around or ask that question as well- if I missed that part, sorry. (can't tell for sure from pic)
To me that seems real cheap I wouldn't hesitate at all for those. I got a corner in my garage for that same thing when I run across that deal around here-the wheels gotta be worth the 200.