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.
construct new porch roof and tie it into main house roof. How much of the shingles do I have to remove to tie new roof frame into main house roof? The roof is only 2 years old and the old roofing was completely stripped before new shingles were installed. Also, what if the peak of the new framing is higher than the peak of the roof I am tying into.