Just a couple of thoughts here. I have a Venture 60, designed by Bruce Tharpe, who designed the 4* series for Sig. Although it's a great flying plane, I get the feeling you might get bored with it in time. If you build an Ultra Sport, will you install retracts? Are you up for that challenge, and if not, will you be happy flying it without retractable gear? And third, I know you said a 60 size, but if you could see yourself going down to a 40 size, a Sig Somethin' Extra could be just the plane for you. It's an easy first build and flys great also. Good luck in the search.