if its a wrestling forum and you want to advertise it after you make it "just to prove a point" you will be banned.
If you make a forum which has nothing to do with wrestling, then.. its fine.
I have a forum of my own, v-bulletin as well. But it has nothing to do with wrestling, yet i never advertised about it. Its expensive and it takes so much time from you. I have my firends looking after it as im kinda busy. Its not an easy task.. You need to always do backup to it. Always try to make it active with ideas, you wont profit from it at all for like 4 years. Then if you were lucky enough and have the unique ideas and designs , you may succeed and start to get profit.
Also im not sure that a 16 year old can have a server (as you are still young). Coz the site will be registered by the owner.