I wasn't going for
proper, I was just using the terminology that already been introduced
Isn't that where the OP is trying to get? (more positive, or neutral?)
I have to disagree... AL80's - with an aluminum backplate, with or without a wetsuit, will need a lot of lead
to stay down once a certain amount of the gas is used - a balanced rig means being able to hold a stop, too. Most of the people I know who dive AL80's do so with steel plates and v-weights or tailweights.
OP: First off - the easiest, most simple solution, would be to change out the BP from steel to Aluminum. Several people have mentioned this. There is a decent probability, that this would work for you, without going through any kind of a learning curve with a drysuit, or becoming, as you describe, a "tank collector." Can you borrow an aluminum BP and then go diving (with a buddy of course) and "fail" your wing at the beginning of a dive and see if you could ascend with a full tank? Secondly, if you choose to go down the path of the drysuit, realize that you are going to be managing a third buoyancy source (in addition to your lungs and your wing) and it's not something most people master in one or two dives. Good luck.