Yep, quantity will be your problem. Eventhough I'm only doing the CPL course, I find quantity to be the problem. It also depends on the teachers mentality. Sometimes you get old blokes that have a true reason for teaching and are truly motivated, and sometimes you get young people who just wants get their teaching experience and then move along to the airlines... I've seen it happen anyway...
Just plan your time carefully and you'll make it fine!
regards/lns