Momx3 - we're renting 2 luxury floats and a few "water bunz" from here.
http://www.bviwatertoys.com/water-floats/. They have noodles for rent too. They'll deliver them to your charter boat.

And I'm just like you - the planning is a ton of fun for me too! We should compare spreadsheets someday <img src="http://www.traveltalkonline.com/forums/images/graemlins/Grin.gif" alt="" />