...I am guessing that means going Tech, but I don't dive enough.
...When I say "Deep", I mean well over 200 feet. Cave, I mean, those really long caves.
I do not have the money available to replace my current gear. So, GUE is not where I will be at.
This is really a recipe for disaster. There is no shortcut, no cheap way, and no substitution for proper training and experience. GUE is not the only option (but it is a good one), but all of the prudent options include proper training, equipment and experience.