Drew, everyone is trying to help you. No one wants to rain on your parade. We just want to to live to see these great adventures. So how many dives have you had so far? Christina Campbell is an accomplished woman tech diver. She has dove the Andrea Doria (78 meters) and the Lusitania (93 meters). Here's what she says...
You need to get trained - nitrox, advanced nitrox, technical nitrox or extended range, and then a mixed gas course. Invest money in the right equipment, you'll need at least 4 cylinders...Doing all the build-up dives and practicing the skills will take time. You will probably need to spend at least every other weekend diving.