Alright...first off you need to read the stickies start with
zerothread/99647
SR injectors wont fit your fuel rail. In that sticky is the injector spread sheet which will list all the other top feed inj that you can use. If you are going to use a FMU then just use your stock inj for now. Otherwise you will need something to contol the bigger inj with.
If you are going to buy all that stuff then why buy a cheapy setup?
To answer one of your q's--I am not too sure on which FMU to get, but I would say that an 8:1 would suffice. Just search around and look at other peoples setups.