I'll second Vladimir's thoughts.
Go for a second hand A. There was a carbon A with a Hall mast on sale in Newport for $3k 2 years ago, I dont know what happened to that boat, but its a point of reference. It wasnt minimum weight, but at one time, it Steve Clark's and he raced in the North American or something.
Pro's
-easy to rig
-easy to right after capsize
-easy to move around on the beach/ramp/etc
-fast and fun
-you can fix it yourself and change stuff you dont like, you can experiment and tinker.
Con's
-hard to be competitive in the dedicated A fleets - especially with an older boat
-you'll probably need to fix it yourself
-not as robust as a TheMightyHobie18
Bill
Rubin,
I'll second the second. You've told us you won't race, want something more exciting for lighter winds, that you can right yourself. You'll be hard pressed to find any boat that wont immediately or eventually need some maintenance or repair.