If you want to play with your main druid then go with a druid healer as well. That way for PvP you can spec them both the same for easy play.

I was like you not to long ago just starting with boxing, and I suggest starting with two new characters to box, dont start with your 85 toon. Learn boxing as you level up your two new toons together.

Also, I dont think they like talk about free servers here, only official stuff here that in no way goes against the ToS. Boxers already have enough hassle.