Crunk Juice is also the name of a 2004 album by Lil Jon and the Eastside Boyz.
Re: tying the porch roof into the main house... I'll add I'd also go with 5/8 CDX ply for the roof sheathing. That added 1/8 goes a long way to resist uplift , and as you know wind in your area is a BIG issue.
Attaching Below the Ridge. In the case of a lean-to roof over an addition, the existing rafters will have to be cut away to accommodate the addition, and the shed roof will require support where it ties into the framing of the existing roof.