I'm a little confused. A clevor is usually a Windsor block with Cleveland heads. Are you using a Windsor block, or is it one of the new Dart blocks? I think Ford Racing offers a Winston Cup block that has 9.500" deck heights plus the smaller main journals.
I guess it all depends on what you wanna do. Are you wanting to build a strictly race motor? If so, there are other combos that you can go with that can save you a little money.
If you're wanting to go with a street engine, you can save a lot of money....
What's your intention with the car?