In some respects, jo5ephedward5, you're in an enviable position. You're up to date with your repayments and you have a clean credit file (you have seen your credit file, I take it?).
If you have aspirations to obtain a mortgage then the sooner you clear your debts, the sooner you will be able to apply with confidence.
If you opt for the Payplan route, your creditors are not bound to accept your proposals for reduced payments. Even if they did, as you have said yourself the debts would take longer to settle and your credit file would have derogatory entries.
I think you should stick with it. Concentrate your efforts on getting your debts reduced by reclaiming your charges. Your creditors will either credit your account with the refunds or send you a cheque. If it is the former, then you will be clear in less than 24 months. If the latter, well that will help to make life more tolerable in the meantime
Elsinore