The somethin extra is out. I saw one at the field today and isn't as scale as I though it would be. I also think I will choose the US over the Contender. The Ultra Sport has many more followers and threads. Plus, over the last few weeks I began to notice I tend to fly faster than slower and the retracts would make low passes look so much better. Is there any preference (both building and flying) between the 40 and 60? Also, is there much of a difference between the performance of the mechanical vs air retracts recommended for the kit? The mechanical are half the price of air, plus I don't have to worry about air pressure. Here's what I am thinking:

US 60
Magnum 91
JR FM
Standard BB servos
6v 2000mAh battery
Dave Brown Southern Pro Retractable Landing Gear
Ultrakote

US40
Same as above, Magnum 52

A few questions,
1. Should I build over plan or buy Wing Jig?
2. Would the hinge cutter by GP and marking tool be worth purchasing?
Thanks for the help.
PS: If you would recommend a different plane, please let me know why as I haven't fully decided on a kit yet.