Don, has the machine work has already been done (bored, honed, etc.)? I've paid people to bone, hone and surface blocks and regrind crankshafts (I did that for a few years myself!) as I just don't have that capability, but I assemble the short block myself. With your skill set, assembling your own engine won't be a problem for you. Maybe I'm paranoid, but I even take cylinder heads (new and rebuilt) apart to check everything. I've had to lap valves and lightly hone valve guides. Luckily there are a few good machinists you can trust, but they're getting scarcer and harder to find.