Hi Sally
I will try and abswer your questions but you should still seek assistance from CAB, they will help you fill in your forms.
If you and your partner are petitioning for BR you will both have to pay £485 each, unless you arein receipt of any benefits then this amount may be reduced.
You say you have £2000 equity in your house, you will have the opportunity to find a friend/family member etc to purchase the beneficial interest. However there are also the OR legal fees to pay. You must continue to pay your mortgage also.

If you were to move in with your parents then you would I assume pay a form of rent and something towards the bills, you need to discuss this with your parents, your I & E must be realistic, however it will be down to your OR to decide what is and isnt acceptable. If you have someone who can purchase the BI in your property then you would be able to stay in your own home.
6) each OR is different with regards to Cars, some people have lost theirs regardless of value as the OR felt it was not essential to keep it. It is up to you to sell the car before petitioning, however there is no guarantee that the OR will allow you to keep the new car, I personally was albe to keep mine but the allowance in my area is 2K. You will of course have to hand over any additional money from the sale of your existing car.
5) If this money is paid whilst you are undischarged then you will have to advise your OR and they will confirm if this has to be handed over. At the end of the day we still have a responsibility to pay back as much as possible into the BR estate.
3) You need to speak with the halifax, not all banks allow undischarged BR to retain an account. I am not sure of the halifaxs stance on bankruptcy, but you may well want to open a new account anyway to avoid any issues when your account is frozen. I can recommend the CO OP and alot of others will recommend thinkbanking.
I assume you had an I&E for your IVA, was this not a realistic one? If not then list what you actually spend, be very realistic, as I said before the OR will say what is and isnt acceptable. Check out some of the blogs there are lots that have listed what was allowed in theirs, however again this differs by OR, even in the same area, they seem to have individual criteria.
You will once discharged be able to apply for a mortgage, but you will be resticted to the sub prime market. I cant really give any further advice in that area,
pm.e has listed the links to the insolvency site for you, your first port of call should be to read through all the advice listed there. Then perhaps give the CAB a call.
Good luck
Pippa