[Longhorn Man]

You'll need to build your system keeping in mind your EFI plans. An electric in tank pump will be best, esp if you opt for a factory latermodel induction system.
I would recomend solid lines from the tank, and then a short section of steel braided (that can handle whatever PSI your future induction system will need) and then back to hard lines. You could save a few bucks right now and just do steel lines from the braided lines to the carb, since you'll be throwing them away later when redoing the induction system.
If you just make the parts to fit todays set up, then you'll be throwing most of it away later.