What I have learned is just go with a smaller container for the time being, say 2 months that way the hatchling is not stressed from the large area and also in 2 months those small holes will be too small for your little one.
I however can relate, I went through the same deal you were going through I had a 20 gallon long viv set up for my hatchling and I was worried about escapes. I did have 4 clamps on the 20' gallon lid but those things are crap, did not fit well at all, I had to revamp the whole security issue on that one.
I changed her new viv over to the 10 gallon which I used to have my rough green in, he however is alot smaller then her and pretty much policed the area to find holes which there are none. I have a screen lid but it has a sliding door on top. I have all 4 corners ducked taped and then I have 2 wieghts on top of it

She will have to be super snake to lift that bad boy up :grin01:
Hatchlings seemed to look for ways to escape in the first 48 hours of when you do get them. As I watched her just about for 3 hours checking every possible way to do just that

She tired me out just watching her.
I am pretty confident in her new viv it is locked down like fort knox.