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.
Re: How To Put Roof Over Existing Deck. I think it will depend on what the local building and safety officials say about needing an engineer. I know that here in CA. I can engineer this using what is called 'conventional construction' techniques and design.