The point is that, if you want to make money and get some training done, plus test the waters (so to speak) about the military, the best way is to join the reserves now.
Yes, it is a pain to transfer from ResF to RegF. I've talked to people that said it's taken serveral months (even a year), but I know a few people who have been transfered (from my unit to the RegF) within a couple of months.
That aside, joining 1.5 years from now does not mean you will be on basic in 1.5 years.
If you intend to apply in 1.5 years (actually hand in your file to CFRC at that time), it will take a number of months to go through the application process, and then you need to be selected for your MOC, and then you have to wait-out for course-loading and training.
All that said, if you submit your application in 1.5 years, than you will likely not be in the CF, on course, and actually training for approx 2.0 years or so.
Again, why waste the time? If you have extra time now, it's best to join and then transfer.
Ultimately, it's your decision.