I completed my Cavern / Intro Cave course recently using my comfortable ScubaPro BC, with a slung AL40 as the redundant air source. I could have used doubles & BP/wing but I've only recently had experience (AN/DP course) with that setup and am not entirely comfortable with it yet. I was comfortable with a slung AL40. The only strange thing (to me) was adding a pocket on my waist band web for backup mask and lights. I didn't trust my BC pockets as I've had the zipper open up unbeknownst to me previously. But it wasn't uncomfortable and worked well for the class.
As others have said, Merica, go with the gear you're already comfortable using. If you want to do cave training in a dry suit, then dive, dive, dive with a dry suit first. Good luck and have fun with it!
TDI Intro Cave also has penetration limited to 1/3 for single tank and 1/6 for doubles. That restriction for doubles is completely artificial IMHO (though I'll abide by it when I get more comfortable with doubles and start using them.)
As others have said, Merica, go with the gear you're already comfortable using. If you want to do cave training in a dry suit, then dive, dive, dive with a dry suit first. Good luck and have fun with it!
TDI Intro Cave also has penetration limited to 1/3 for single tank and 1/6 for doubles. That restriction for doubles is completely artificial IMHO (though I'll abide by it when I get more comfortable with doubles and start using them.)