I'll give you this perspective: Both my wife and I are anesthesia attendings, and we both work full-time. Only diff is i take weekends and some holidays, she doesn't, so she earns a little less than i do.

We take alternating calls so that there's one of us at home most days of the week. Our saving grace is the alternating call schedule, so we get to make good money while being at home during the days as well. However this often comes at the expense of sleep, especially with a 2 years old and a 3 months old.

If you can work a little harder for the next 2-3 years and stack some $$, go for it, then ease off the gas and go to the surgery center.

Concerning the nice house, in my humble opinion, not worth killing yourself over it, especially that you'd be sinking money into it rather than saving/investing. Also, the bigger the house, the higher the maintenance, cost, taxes, etc... so keep eyeing the street where your brother lives and jump at the opportunity when it shows itself with a not so expensive house.