First off, welcome to CHR! We've got a number of really 1st rate engine guys on here so you should get lots of advice and all your questions answered! First off, is the machine work all done, or still needs a final hone to fit the pistons? As for the cam, most everyone is going hydraulic roller these days because of the additives that are no longer allowed to be put in the oil, zinc mainly.....More money, but if it's a project you're keeping it's probably well worth the extra $$$$$.....

Good having you here, hang on and the bbc guys will be around to give you some ideas, I'm sure!