The Legend of Lochlinlea
If you are using a template the benefits can be great, but the cost to do so is as well. Examine the number of hit dice for the “Sample” character in your template (i.e. 4d10+5). You would need to gain 4 levels worth of XP (6,000 XP) and then you could begin to level normally. At 6,000 XP you should reset your XP to zero and then begin leveling normally.