Senna,
I don't believe that spin training should be mandatory, but congratulate you on wanting to improve your ab-initio trg with a lesson on spins.
My only concern is that the C150Aerobat does not spin very well and is often flicked into the spin, not the gentlest of entries and you may find that off-putting.
If funds allow I'd suggest that you start with competition type entries in a 2 seat aerobatic mount.
I spin a lot but every so often a " rogue" spin has me over rotating and not exiting on my chosen line. A 2 turn spin in the Pitts takes 1100' and the first turn really is only the entry, if I do 3 or 4 turns it really starts to wind up but will exit just as quickly.
In-spin/out-spin aileron and throttle settings all make it behave VERY differently and if flicked into the spin it will wind up far more rapidly, too.
Enjoy.
Stik