Building a ledge or climbing surfaces for a large female

So Jefrrey has been in her forever home, a big 4x2x2 PVC tank, for about a year now. She's still a jerk, of course, but she's a happy jerk.

And now I'm looking to expand a bit. She has tons of room to explore, but I'd love to give her the option to have some climbing surfaces and such.

There are two main problems with this. First, I'm hesitant to drill into her enclosure. The PVC tank holds humidity *far* better than the glass did, but we still live in the desert. Humid hides are still a necessity and I still fight a little with maintaining humidity in the entire enclosure. Drilling holes into it could potentially make that fight harder.

Secondly (and this is the big one), last time I weighed her (which was a couple of years ago), she was almost 2500 grams. This chick is 5 and a half pounds. Even trying to find natural looking hides big enough for her was a struggle. Trying to find any branches or wood or resin-that-looks-like-wood big enough to support her weight has been an exercise in futility.

And as a bonus third problem, I'm a sucker for aesthetics and want something natural-looking.

I'm including some pictures of her setup from different angles. The last two are her current setup, with the extra hide in the center because I couldn't get her to stop using the gray hide even to regulate her temperature, and she finally won that battle of wills.

There's definitely enough space to add some climbing options. It's just a little bit of a hassle finding or coming up with something big enough and sturdy enough to handle a 5-foot-long, 5 1/2 pound muscle tube with a snarky attitude and zero respect for gravity or my interior design choices.

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https://uploads.tapatalk-cdn.com/202...9c1a8373ec.jpg

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Drilling holes, which is actually sinking the screws to hold perch mounts will not drain humidity from the cage. The holes will be filled by the screws used to mount the perches.
This is a 6 foot cage. https://i.imgur.com/6Km3KxA.jpg

This is the cage now used for the Royal.
It is 4' x 2' x14"
It has been "decked out" over the years. This early version of it still had 3 separate perches.
https://i.imgur.com/aws6p67.jpg

Every cage here has 3 perches at various heights but they are evenly spaced out so the snakes can balance their weight.
https://i.imgur.com/HVSIeaa.jpg

Another variation of the 4' x 2' x 14"
https://i.imgur.com/FamH67D.jpg
https://i.imgur.com/uJornqT.jpg

It is the top cage here.
https://i.imgur.com/KDrpUT2.jpg

You can always add a mossy hide, an additional water source, different sub, or mist the enclosure. Simply putting screws into the cage to mount perches or a shelf will not drain the moisture out of the cage.

You will be OK doing some little mods. Your cage looks very nice and perches will really add some display excitement for you and some additional exercise and space for the snake.

Good luck.