I used them recently for dry hopping an IPA. The 07210 really gave it some onion/chive/garlic flavor that really overpowered it. I also dry hopped with an oz of idaho7 hop hash, and the 07210 still came out stronger with those garlic tones. Brulosophy did a pretty good article covering their...
Depends on how fruity you'd like the beer to come out. I think 3 lbs would give you a fairly strong fruit flavor and aroma. The zest will probably be a little hard to pick out given the amount of actual fruit going in, so it may be pointless to do the zest in secondary. Usually I find zest is...