383 Stroker – Help with it all!

Hi All,
I want to build a 383 stroker.
I can't afford to buy a stroker kit which is into the thousands.
I am hoping to buy components as I afford them.
I have the block, bored out ready to go.
I have nothing else, just the block, attached to an engine stand waiting for me to do things as I get them.
Can someone please take the time to write down the first 3 things I need to do or buy.
Also, I know that I need to buy a 440 crankshaft. But have read that seeing as the 440 crank is from an RB block, and the 383 is a B block, there is some machining to be done. I am from Victoria in Australia and was wondering should every machine/performance shop be able to do this job?
Thanks heaps guys, would appreciate the advice a lot.
Author: VCval1967