1. I'll be able to dedicate more time to the site.
It's simple, really. If you make money off of something, chances are that it's more productive to work on it than it would be if you didn't make money off of it.
2. Dedicating more time means that there will be more games, and more updates to old ones.
3. All of the weebly stuff will be gone.
This isn't to say that I won't be using weebly. However annoying it is to embed raw code using it, it's still a great tool for me to create my site. However, this does mean that I'll have my own footer instead of it talking about weebly. Also, the weebly subdomain will be gone. The site will have its own URL. However, this may not be immediately after I add ads. The ads will make me money, but almost certainly nowhere enough to be able to afford this just on ad revenue. I'll have to use my own money for this, but I do want to pay for at least a small amount using ad revenue.
In conclusion, there will be some ads. However, I believe that these will be for both of our benefits, and however annoying they may be, they will help the site greatly.