I dove my HP98s earlier in the year for a couple of courses while wearing a 7mm suit. I needed no weight whatsoever, nor did I wear any. I think their characteristics are similar to HP100s.
While I do not intend to make a normal practice of diving wet with the double steel tanks I did not feel it was unsafe. I had a lift bag, spool, and two buddies with me at all times. We were diving in an area with either a 85' floor, or a wall to reach for in the event of a catastrophic wing failure.
Swimming those heavy tanks and all my other gear up from 100' or deeper without any help from my wing would have certainly been difficult considering the lack of buoyancy from my wetsuit.
For what its worth, when diving double aluminum 80's, I use a plate weight and v-weight to avoid the weight belt, so the situation is not much different.
If you find that swimming your rig up from depth minus your bcd is too much once you get everything set up, you could consider obtaining a dual-bladder wing(not something I plan to do anytime soon). You can find lots of opinions on the worth of dual-bladder wings vs. the extra task loading, complexity, and potential drawbacks and safety issues some folks think they cause.
Whatever you decide, stay safe and have fun with it!!!