Good going!
Probably backstroke feels better as you get more air, but it's not nearly as relaxing (for me) as free, now that I've mastered the technique (which took me 2 yrs).
It also took me almost 2 yrs to not get cramps anymore, that's normal.
How about taking a freestyle class just for enjoyment?
I was gonig very, very easy on Sat in one lane and was able to keep up with a guy with paddles on!! (which means either he too, was going very very easy, or he suçked :-) )

