You might want to look into time spent in class and the pace of the program, if you haven't. If it really was just a regualr paced program that lasted 18 months, that would be great. Usually that is not the case, though. Our accelerated program runs 18 months, also, but is nowhere near the same as just doing the regular program with no breaks. They are IN CLASS/CLINICAL 40 hours a week.
Personally, having a family, I don't think I could handle the intensity of our accelerated program. I've talked to several students in it who confirm that the pace of the program is insane.
The most important thing, though, is for you to examine the programs, talk to people who are actually IN them, get a realistic idea of the time commitments involved, then decide what will work best for your personal situation.
Good luck with everything!