Hi all, I was wondering if I could get some advice on how to make a lid and stand for a 75 gallon tank I bought. It's dimensions are tricky because while the tank dimensions are 48×18 the plastic edging makes it 48 1/2×18 1/2" . I also need it to be tough since it will be housing a 6ft boa. What would be the best way to go about doing this? Thanks for looking.