E46 M3 sell for mini cooper s JCW GP?

Ok well I just turned 18 and i had the oppertunity of last April being able to get a 2004 E46 BMW M3 for my first car, im not gonna lie i love it, its amazing, handles great rides nice and is very relaxing to drive, now since i turned 18 i have been doing some driving schools now and i feel like the M3 is just to fast for me to learn with, i have the oppertunity to get a 2006 Mini GP, yes its Fwd but it handles like a dream, its stripped out, recaros, shroths the whole deal, has 215hp and wheights around 2400lbs, i feel like if i got this i could become faster with that then I would with my M3 now and then when i get a faster car ltr on ill be able to a better driver because of my experience with the MINI, so what do you guys think, the MINI would also be a dailey driver btw, thank you