400 to 451 stroker questions

I'm putting myself in the same boat, wanting to build a low deck 426-ish I have a good untouched 64 383 I plan to stroke with rods and crank from a 72 440, and a pair of 452 heads.... initial plan was to just buy pistons to fit whatever over bore I need and to fit the 440 rods. As well as turn the crank down to fit the 383 mains.

By the time I pay to have all that done and balanced, should I just get a kit from 440 source and sell off the 440 rods and crank before doing anything to them.
Of course I'm still 5 years out on my timeliness