Just my 2 cents worth (and that may be overcharging)......
We were in the same situation - wanting to retire back east. After years of planning we had sufficient assets to retire (belt-4%SWR, and almost suspenders-3.5%) from a high stress but highly compensated j*b. Even bought the place we (were) going to retire to. We decided to keep w*orking for a year, live on our assets as if we were retired, bank the salary to acheive the "belt and suspenders"(3%) level. Assumed that if we could live on the current assest while commuting 350miles each way to work and supporting an apartment in another city, we'd have NO problem living on our assets without the added expenses.
We got comfortable that our assets could sustain the hit of a downturn, which was a major hurdle. Then life threw us a curve - the realization dawned on us that we had unexpectedly put down some roots where we are, and that the property back east, while beautiful and unique, required us to start fresh with new friends, doctors, mechanics, deal with snow and cold weather, etc... and eliminated any fail-safe option of re-entering the workforce in my profession if both the belt and suspenders failed. And that we didn't want to re-locate yet again.
We found a wonderful place 20 miles up the road. It's similar in many respects to what we have back east (and in most respects, even nicer) and just closed on it last Friday. We are beyond thrilled.
Point is... the year gave us a last chance before diving int te deep-end to take off the rose-colored glasses, re-evaluate and test-run the economic and psychological/emotional aspects. The extra savings has hurt, either.