tank drilling

I just drilled my 40 breeder and put overflow box as you can see in the pictures. I am worried about the overflow box leaking or causing issues. If someone has been down this road before, I need your thoughts on what to do. The way I see it I have three options: 1) Leave it as is 2) remove the...

Would you always go for a predrilled tank? Or prefer the standard? What reason? The standard version plus a hob overflow cost nearly the same as this seapora drilled.