The Cessna 172 is a thing of beauty. I have about 380 hours, of which more than 50% is in Cessna 172s of some variety. Until I recently discovered the Cessna 182, it was my favourite aircraft!
Unless EFT have seriously upgraded their fleet since I was there (which I sincerely doubt), their Cessnas are of ... considerable vintage. However, I was perfectly happy with them. I don't think you'll have any problem switching from one type to another; I have flown a lot of different light aircraft since getting my PPL, and the basics are all very much the same; just pay attention to the relevant speeds, and you should be fine.