learning on my 2nd hand 12m Cabrinha Switchblade, but noting some days the wind isn't really quite enough to be ideal for standing up on the board...

so was wondering whether getting a 2nd hand say 16m would be an OK idea now (as we start to move towards winter re winds) to get more chance to practice (i.e. would have the 12m and say 16m)...or whether this mightn't be a good idea to be switching kites as you start to learn? i.e. whether it's just best to wait for the right days for the 12m

by the way - if/when I was ready for a lighter wind kite, any suggestions re what size/model would be ok for a beginner? (2nd hand, less than $800 I was thinking)