A 752 would be an excellent business. But I believe you get more range out of the BBJ1?
Actually, early numbers that were thrown around when the 752-BBJ3 was being discussed was a range of aprox 7,200 n.m. The BBJ
's max range is 6,200 n.m.
I'm not a real aeronautical engineer, I just play one on Airliners.net.