Lv 43 at that place? Hmm, you're doing pretty well then, no need to rush along then unless you just want the boss battles to be really short and no fun. 'Course, by the end of the game you'll wanna be at least in the mid or upper 50s, and 60s are optimal, so you should work toward that and not just run from every battle. Just dont get yourself sick of the game cuz of leveling so much, try some of the sidequests (the stellazio one is well worth it for all the stuff you get).