Font of Inspiration probably won't be worthwhile without Cunning Surge. Remember that your inspiration refreshes every encounter anyway, and not everything you do will be burning inspiration points.

If you do take one or more Warblade levels after you start Chameleon, remember that you only need to meet prerequisites for maneuvers at the time you take them: If you later lose a prerequisite, there's no penalty. So you can use your floating feat on Martial Study to help meet a prereq, and then change it to something else.

At higher levels of chameleon, you can effectively use three ability focuses at once. Start the day with arcane/divine, spend all of your divine spell slots on all-day buffs, and then switch to arcane/something else.