gue courses will allow me to be able to go down 140ft and check out wreks? or do I need to start building my courses there to like PADI.
Neither GUE fundamentals nor UTD Essentials will take you to 140 feet to check out wrecks. Both courses are designed to prepare you for further courses--a lot of them--that will get you there.
I am a product of UTD, so I know their system. If you want to be certified to dive to 140 feet with them, you will need to be Tech 2 certified, and completing UTD essentials will still leave you several very difficult courses short of that. Tech 2 is a very demanding certification, and I suspect it will take a typical diver who does not have immediate access to diving and an instructor several years to get there. It will also cost you
much more than the $1,000 you quoted earlier.
Both GUE and UTD stress the use of helium for deep diving. Quero earlier mentioned her TDI deep air certification. Neither GUE nor UTD have deep air certifications because they don't believe in it, and they won't take you to depths like that unless you are breathing a mixture containing helium. You will also need to be diving with a different gas for decompression, not the same gas you were breathing during the dive, and they need to train you for that. Since that means a level of nitrox certification higher than standard, you will also need training in that.
In UTD, a tech 1 training will allow take you to 130 feet on double tanks with deco being done on pure oxygen. A tech 2 certificate will take you to 150 feet on a mix containing more helium and decompression on EANx 50. You will also need to carry a stage bottle for that certification, meaning that on your dives you will typically have double tanks on your back, an AL 80 on your chest with the same gas as the one on your back, and an AL 40 on your chest with your decompression gas in it.
Once you have that certification level, you can take the wreck diving courses.
If you go the real economical route and buy your equipment used, you might be able to get everything you need for only 6-7 thousand dollars.
I get a pretty good deal on my helium. I am able to make my own mixes and only pay $0.75 per cubic foot. I am about to leave to fill tanks for the weekend's diving. I probably won't have to pay more than a couple hundred dollars for the helium I will use.
In the meantime, there are
plenty of wrecks at around 100 feet (or less) that are safe enough to enjoy with nothing more than AOW training. You can go to Truck Lagoon (Chuuk) for example and dive all those WWII wrecks, doing 4-5 dives a day for a week, without any technical training whatsoever. Why not enjoy those for a while until you get a feel for what you want to do?