What all do i need to take to machine shop?

Too start with, remove the bearings and check the main saddles for visual cracks. That's a good thing to do yourself, I had a guy bring in a 400 for a stroker build and I noticed a crack in the middle saddle across the oil feed hole before the mag check.
Like every already said take in the main caps, also any other parts you want to reuse.
Ask for a parts rebuild price and compare to a 440 source stroker kit. You can have fun with a 383 but 438 or 493 cubes will be more fun in my opinion.
I do highly recommend the Molnar parts @PROSTOCKTOM sells. I use it in my 471 and it is very good quality