The Sig kits don't have laser cut parts, they are die cut old school style to the best of my knowledge.
I'm pretty certain that someone here DOES or WILL laser cut you ribs and the half ribs that you want for the second one, but, you could just make metal templates and stack your own rib set, since the wing is constant chord.
Laser cutting comes more into play with tapered wings, IMO, although you could stack cut those as well.
You don't have to have a wing jig, but since the ribs are not flat bottom, they will either have tabs, or you will need to prop up the lower spar and LE with the TE on the bench.
A flat surface is important, either way.
Have fun. Don't worry about the first build too much. Concentrate on making the bellcrank to leadouts correct, and as Dan said, add the tip box and adjustable leadout guides and fly the stew out of it!
