Hi Michael
Firstly welcome to iva.co.uk. I hope you find it useful.
In relation to the charging orders, they would be classed as secured creditors. If, at present you are required to make repayments on these charging orders then this would form part of your monthly expenditure in the IVA.
If you do decide to enter into an IVA, your Insolvency Practitioner will run through everything thoroughly with you so you fully understand what is involved.