I'm not sure I can give you a definite answer here. Sometimes things just have to be put to an insolvency practitioner directly so that they can advise you whether or not they think it's acceptable (or at least they think your creditors will deem it acceptable) for you to continue paying for these goods for the next two years.
It's not an enormous amount of money, and it will not run all the way throughout an IVA, so maybe an IP will be OK with it so long as everything else fits together well within your creditor proposals.
Sorry this isn't a specific answer, but sometimes situations like this come down to a judgment call instead of a black and white rule.
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