ER's definitely commutable. I've gone home for the night even on back-to-back trips if the weather's nice. The UK stuff you'll be flying the majority of the time as a new hire on reserve are > 1730 reports and < 1300 releases for the most part. And I live in JAX. If I was in ATL, it would be even easier. Plan to go in and out of LGA, though, as the JFK-ATL flights are pretty thin. Kew Gardens Cab (718-846-6666) will take you between the two airports for $18, and there are always other commuters to split it with. Takes anywhere from 15 minutes to an hour, depending on the traffic. I don't have a crash pad and don't plan on getting one. So far, I've spent one night up there, and that was because I was intercepting an ATL 767 domestic trip mid-cycle for OE, so it was a rare morning departure.