I have had ocassional issues upsizing snakes too soon (refusal to eat). In these situations, putting the snake back into the smaller enclosure for some more growing solved the problem. So, if you hang on to the current enclosure you can undo the change if that's the preference the snake indicates.
Given that there's basically no visual security in the current setup, I would not anticipate a problem with upsizing.
Yeah, I don't think elevating the enclosure off the floor did good things for visual security. Putting real substrate back in should mitigate the effect of that though.