Help with 340 compression + cam change

So after getting a recommendation from Howards, talking with Mike Jones for a while, and having a long talk with Dwayne Porter, their thoughts are generally, yes, I could gain some with more lift but at some risk it wouldn't be much different.

The recommendations were pretty similar: Single pattern (which surprised me) 108* LC with about .220" (one was .224") at .050 and .495" to .506" lifts.

Mike Jones was pretty clear I should somehow deal with my compression first, and thinks I should change springs if I do any more lift. Dwayne suggested I look into something like the CH318B heads, as they'd actually do better than the ported ones I have.

And of course, I don't have a lot of converter either. So I'm on hold with any cam change unless or until I decide to tear it all down and do different pistons to get more compression and do a different converter, etc.

So for now, I ordered one of the new AVS2 650 carbs which came today. And I gotta tell you, after being used to my 750, looking at those 650 primary bores I can't believe they are enough!! All formulas and advice say it's enough carb. If I think of the size of Thermoquad primaries then maybe. And maybe set the AVS to open fairly quickly??

Anyone have specific experience with either the 800 or AVS 650 Edelbrocks on their 340's???????