Go ahead and figure how many stage and deco bottles you need. I can tell you, it won't add up to needing that much lift. If you have that many bottles, you will need to be diving high helium mixes so they are near nuetral from the start or those will cause so much drag it won't be funny. The scooter will be close to nuetral if it is weighted properly.
Go look at the guys that carry the most equipment on a dive. That would likely be WKPP divers. They use 55# wings with way more than you are I would ever care to take with us.
I have to wonder when people mention the ripped drysuit. It won't cause you to become extremely negative if you have the right undergarments and use the proper amount of gas in the suit. Thinsulate is hydrophobic. It will provide space for gas to trap in your suit water will not fill that void. Just try putting sinking thinsulate. The shell suit won't loose any buoyancy. You may loose some buoyancy if you count the lost gas that is in excess of what you really need. Again, you don't need a lot of gas in the suit. Just take the squeeze off to the point where you keep the loft of the undergarments to where they were on the surface. I have flooded my suits at depth before and there is no casastrophic loss in buoyancy.
If you completey loose buoyancy of the wing, start getting rid of droppable items. If you are properly weighted, you will be able to swim yourself up, no problem.
This whole idea of needing maximum lift is nothing more than a solution to a problem that doesn't exist.