Here's a few thoughts:
(1) "...not against adding some octane out of a can..." Use a good octane booster, like Torco Accelerator, with flat top pistons.
(2) " Would be convenient to run pump gas..." Switch to E-85 fuel, if it is available in your area. There is plenty of online info about E-85.
(3) If you go with higher octane fuel & flat tops, you can by forged Auto-Tec pistons. Auto-Tec will move the pin location to wherever you need it, to get near .000 deck height. The last I heard, they did not charge any extra for the pin relocation. The price for pistons/pins is just over $500 shipped.
(4) If you go with the higher compression, I agree that the 60244 is too big. If you run a Crower, the 60243 would be a decent cam. My favorite would be an 041 clone, like the Melling SPC-8, with Rhoads orginal lifters with the Super Lube option. The Summit 2802 would be the cheapest decent cam for it.
(5) I think the Auto-Tec/Race-Tec customs are the best price you'll find for custom Pontiac pistons. Might be slightly less than $600 shipped.
(6) If you go custom & drop the CR down to a safer 9:1, I'd consider a Voodoo cam, either 262 or 268. The Voodoo cams are said to have a smoother closing ramp, which eliminates the noise which is common with the CC XE series cams. Most of the engine builders & street guys on the PY forum recommend Voodoo cams, instead of the XE cams.
Voodoo Hydraulic Flat Tappet Cam - Pontiac V8 262/268 - Lunati Power
Voodoo Hydraulic Flat Tappet Cam - Pontiac V8 268/276 - Lunati Power
But, a Summit 2802 with Rhoads lifters would probably be a decent choice also.
(7) If you use regular lifters, I'd go with Crower Cam Savers, and if you use Rhoads, I'd go with the Super Lube option.
Crower 66056X3-16: CamSaver Hydraulic Flat Tappet Lifters 1955-Up Pontiac V8 | JEGS
I am not a Pontiac engine building expert, by any means. And, I have not personally used all the products mentioned here. But, I have built & raced several Pontiac engines, & have used some of these products. And, I can read what others have experienced & posted on Pontiac forums. So, this is just a disclaimer. No need for anybody to question my expertise, because I admit I have none. Just trying to offer info that might be of help to the OP.