Get a stainless backplate, any cheap one will do. That being said you might want to get a long pattern plate. Get a smallish wing for travel, something like an Oxycheq 18lb wing. don’t bother with integrated weights. A weight pouch on either side of the cam band will do. Get a larger wing, 35 or 40lb for cold water dry suit diving. Same same with the cam band weights, put on a weight belt if you need it. The steel plate by itself will make up for some of the extra lead you’ve been carrying around.
The only time a steel plate might be annoying is the travel weight, because it is heavier than aluminum or kydex. I’d rather not have to add weight when traveling so I deal with the few extra pounds.
Personally I have one backplate for singles, doubles, and rebreather diving and only change the wing as necessary. It’s sized for drysuit, and there’s extra tail on the waist band in case I’m diving in something else. The shoulder straps should be loose, so a little extra loose isn’t a problem. The only time I dive a different backplate is double hose, because it positions the can correctly.
The only time a steel plate might be annoying is the travel weight, because it is heavier than aluminum or kydex. I’d rather not have to add weight when traveling so I deal with the few extra pounds.
Personally I have one backplate for singles, doubles, and rebreather diving and only change the wing as necessary. It’s sized for drysuit, and there’s extra tail on the waist band in case I’m diving in something else. The shoulder straps should be loose, so a little extra loose isn’t a problem. The only time I dive a different backplate is double hose, because it positions the can correctly.