T Vagans Housing Question

Hello! Short version: would a glass 20"x12"x14" enclosure be a good fit for a T. Vagans? See the link for more details. Of note, the mesh top is not woven mesh, it appears to be stamped or at least nicely powder coated. (https://www.walmart.com/ip/728149138)

Longer version: I picked up a female T. Vagans from a local keeper who was downsizing. She is almost 6 years old and at least 5" DLS. They were keeping her in a 12"x12"x19" front opening enclosure with about 3 inches of substrate. She has a burrow underneath a hollow tree ornament that goes fully down to the glass. She is in good condition and appears healthy, but I would like to rehouse her into something more suitable.

She wanders her habitat now and then and has been seen on the glass a few times. The hollow tree takes up a lot of room. It's clear she likes to burrow at least a little. My thought was to give her a lot more substrate and some more horizontal space to explore as well. I know there is a healthy debate regarding enclosure size, etc. From time spent observing her, I think she would benefit from the bigger area to explore.

The main points I am second guessing are: is the lenth to height ratio good for her as long as there is enough substrate? Will the lid provide enough ventilation? I have done a good bit of reading on the matter, just wanted to be sure before I put her through a rehouse. Thank you!