Hair loss from depakote has been well documented. You should meet with your prescribing doctor and find an alternative (hopefully you discussed stopping it with your doctor already!). Your hair will likely grow back over a 6 month period. If not you should see a specialist in...
Given your young age, and the extent of your balding, it would be wise to wait many years before ever considering a hair transplant. In the mean time I would suggest 5% minoxidil over the 2% as it is more effective. The use of finasteride would also be very important. PRP and laser...