O-200 overhaul & Vari EZ value

I am considering buying an O-200 powered Vari EZ in a couple of
months. I like everything about this specific plane, except the
engine. It has about 1400hrs on it, so only 400hrs left to TBO. I know
I don't have to overhaul it, but I wouldn't be comfortable going
400hrs past TBO, so an overhaul would have to happen in the next few
years. Am I just stuck paying $8K-$10K for an overhaul? I don't mind
doing the work myself with an A & P looking over my shoulder...still,
just the cost for parts would be significant. Is there any way to save
money on an O-200 overhaul and still get a safe, non-certified engine?
From what I've seen I'll be looking at $5,000 just for parts, IF the
crank and block are fine. Is that accurate?

So I'm wondering if I should just skip this plane and spend the extra
money to get a Long EZ with a lower time engine. The problem is I
really like this Vari EZ...it has several features that I like
(autopilot, GPS, etc.) and I have plenty of faith in the structure and
workmanship. On the other hand, with a Long EZ, I'll probably get some
extra useable load, and MUCH greater range (6+hrs instead of 3+hrs).

Any suggestions or input will be appreciated!