I have a meyer with a key lime graft (alright, it's a fancy way to say cocktail, although I think I'm going to need a real one after worrying about the tree), and have been waiting to transplant into it's new pot but am worried about the transplant shock. I figured I would wait at least until it wasn't in flush, but first the lemon side was in flush, then it was winter, now the lime side is in flush. I am worried about it becoming root bound in it's current pot since it's been a few months. Should I go ahead and risk doing it now? or wait until after the lime blooms are done? I feel I should mention the lemon side never seems to really stop having at least one or two flowers, and the lime side also has a few new branches growing.

I also had a question about my potential 511 mix, I've been reading and although I hear some prefer the gritty mix, it's not easy for me to find the "grit" around here. Besides, with our extremely hot summers, the containers tend to dry out really fast. So I was thinking of using peat moss, some smaller mulch and potting soil. Is this good? Should I use more mulch than peat moss or vice versa? Any advice would be most appreciated!