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.
Physically clean moldy surfaces of the framing lumber and exposed roof or wall sheathing. No you do not normally need to demolish the roof or wall to treat the small remaining areas between the narrow edge of a rafter or wall stud and the roof or wall sheathing that is nailed against it.