Again, best of luck. Map those new irons, along with any wedges you get. On the wedges I would map for full shots on all of them. On the 64 degree, I would map for full, punch, flop and pitch shots. Use the search box for tips on how to do that.
As far as which wedge to get first, I would track how far out you are on your wedge approach shots before you decide. Remember those L38ish ATVs do step a bit funny. When I used them I had the 64, 60 and 56 degree ones. Distances are 50, 77 and 93 yards respectively.
There also are a 54 and 52 degree wedges, with yardage good for 98 and 105 yards. I never played either of them, and there aren't very many reviews. The G25 iron set PW is 115.