Morning everyone! I am getting ready to pick up my tank this week and I had a question. Has anyone drilled their own overflow holes in a new tank before? my
LFS is charging an arm and leg (or a fin and a tail)

to do it. The tank is a 90 gallon tank (48 L x 18 w x 24 h) and it costs $300 without the holes and overflow box. To have them add the holes and overflow box would bring the cost of the tank up to $440. I would really love to put that extra money toward my
skimmer or something. Are there any resources or tips on doing the overflow
DIY? Or would it be smarter to just have the
LFS do it and bear the risk?