A multi part answer:
1) Send your questions via the contact us link. Ayce has always been very responsive.
2) For the kinsman (and wind pants, I think) kits, he sends a pattern for just the size you order. The older kits come with patterns for all sizes.
3) The kinsman (and kennebek) are not overly short at the bottom. The picture shows the bottom about even with the sleeve ends … which is approx at the bottom of the buttocks for me.
4) And finally, info from the kinsman kit I received:
* The back piece of the XXL measures 32″ from base of the neck to the bottom.
* I cut the pieces this morning using the layout diagram provided and the fabric in that kit was about 20 inches longer (full width) than it needed to be.