Any advice on my 440 recipe?

Hughes designed the Whiplash cam specifically for the low compression later motors to help build cylinder pressure. I am extremely happy with mine. If a piston change increases to more than 9:1, I would talk with them as you may have issues. People can speculate all they want, they likely never had one or tried them. There are engine builds with dyno sheets on their website.
edit:

Dyno example below. Seems pretty damn healthy to me. Bring on the haters...
Post #42.

Any cam will 'work'. But will it provide the best performance that the OP wants to arrive at?
In THIS case the Whiplash [ or any of the other fancy names given to the tight LSA, very extended exh duration cams ] will NOT.

These cams were ground this way to give a lot of low speed overlap.....& a rowdy exh cackle so the girls look at you when you drive by....

There are lots of cams in cam catalogs for people to choose from & any dope can pick one, but it takes a smarter person to pick the right one for the application.
I made 415 hp and 465 torque with this dopey cam and an actual 7.5 to 1 compression. Excellent response and great midrange torque. No girls look at me because I put quiet mufflers on it.