Hi Jim,
You have a great engine/prop combo there! You will be thrilled with the performance. The Aerosport team -- right there in your backyard and the guys at Whirlwind are top drawer. (I have just used standard 3/4 "stubbie" wrenches to get the prop bolts started. The key is to avoid getting the wrench up next to the hub as you tighten. Contact with the hub will cause the wrench to slide up a bit on the bolt head and cause a poor fit, eventually damaging/rounding it off. The contact is hard to recognize sometimes, just be careful. You'll get good at it

I use the same stubbie and a 3/4 inch nut and bolt at 90 degrees to my torque wrench to tighten.) To grab those stubborn safety wires, make a small hang-mans noose out of wire slipped under the nut to grab the wire, pull it around the corner with your pliers...)