Mainly the only problem that I see with what you would like to do, is that there really isn't much room inside of a dive hat. Another thing, what about the power supply, will it cause interference with the camara that is mounted on the dive hat(if there is visiblity), and would it be another cable that has to be taped into the umbilical. Don't know if you've thought about that. Good luck with the project, and don't mean to rain on your parade. If you have any questions feel free to e-mail me, cwelch5215@aol.com. I've been a commercial diver/welder for over seven years in the Gulf of Mexico. If I don't respond right away it's because I'm offshore. Another person you might want to try and contact would be Tom Reynolds at Global Divers, he might be able to give you some input, his number there is 1800-525-3483.