My advice is just to be honest with yourself. It's real easy to get sucked into the "I need billet forged everything" mode. But the fact is you probably don't. You need to ask yourself (and be honest) what you're using the car for. If you drive it with some street action and maybe a couple trips to the track every year running low 12's do you need billet mains, steal crank, and forged pistons? No. Are the nice to have? Yes, but the fact of the matter is that if you need those parts to run those times then you need to stop driving your car until you learn how to tune. As for the idea that if you build a mid 10 second capable short block it'll be there when you do need it, and I truly hope one day you do, I have this to point out. It takes allot more than an engine to go 10's. Why drop $10,000 on an engine you won't be able to use while you get the rest of the car (suspension, tranny, cage....) together? If you go that route there's a chance (unless you have a ton of cash to spend) that you'll use up a good portion of a fast engines life going slow and just have to build it again when you're really ready to go fast.
So, to sum it all up, I think you should figure out where you want to go with your car and then come up with a realistic way of getting there. I would much rather have a stock (or close to it) build on the engine with a good tranny and good suspension with a mild turbo and some other goodies than a built 10 second capable engine, weak trans and stock suspension that doesn't hook up. That's my .02. james