Stroker build or not, if it’s not a race car only then it would be for me a hyper-U piston and a dyno session to determine the engines out out in order to help with a converter choice for what ever trans you to with. I’d do the 727 since it’s in your hands. No sense not to use it and spend more money on a core 904.
Crank is a forged unit. I’d run forged aftermarket 4340 rods.
Flat top Hypers.