You are going to have a difficult time soloing anywhere. BST's charm ability is based on the level of your BST as a main, even when it's only a sub. So in order to solo effectively w/o an undesired mischarm rate, you want the level of your BST to meet or exceed the level of the job you are XPing on. For instance, if your THF was 30 and your BST was 29, it would be ok since the level of your BST pretty much meets your THF, and the mobs will con the same, however, if your THF is 60 and your BST is 29, the mobs you are trying to charm will con IT++ to a lv 29, making your experience very difficult. Now if you are THF60 and BST60, the mobs you are trying to charm (if you're doing it right), will con DC-EM to both your THF and your BST, making it ok. Even though your BST is a sub, the charm ability success rate is directly linked to BST as a main. Gives a new meaning to underleveled sub. If you want to solo well as THF/BST, level up your BST first to the same lv as your THF, or to get it over with, do it straight to 75, then back to THF, otherwise, say hello to a lot of campaign. Best of luck.
80SAM, 80BLM, 80DRG, 78RDM, 76BRD, 75BST, 75NIN, 75THF, 75WAR, 75MNK, 75RNG, 75BLU
Alchemy = 99+1 Cooking = 73 Woodworking = 59