PISHTAS turbo build

So say I want to do this in stages. Start off with boost gauge and A\F, J-pipe, eBay turbo, 2 barrel carb and a boost referenced pump, and 5-6 pounds of boost. Can I run a stock ignition? Other odds an end parts?

Once I got that sorted out and was ready for the next step would it be reasonable to add water-meth injection, BOV, a timing retard system, modify the carb for boost, and move up to 10-12 pounds? Other odds and ends? Would it be easier to just start here or is working up a good idea?