318 build suggestions?

Car is currently a 225/6, Clifford 6=8 4 bbl setup, 7.25 rear, 3.91 gears, 28” tires. Have a small block 904 to go with the new build. Other than that, starting at scratch, and around here, finding 340s or 360’s (complete) are like finding a leprechaun.

Wish I had the scratch to but a nice Blue-Print 408/727 stroker combination for the car and have warranties and everything nice and new, but there’s just no way I can swing 16 grand….so unless I find a philanthropist that wants to see that happen for me, it’s grinding away at overtime and driving Lyft on the side to scrape something together. Add to that, I’ve never built an engine before, and hoping I can manage the swap with limited space, tools and experience.
I know the rear won’t handle much, but if I baby it, it’ll get through until I can afford an 8.75