UC migration questions

So I am soon to migrate to UC from ESA after being given a migration letter and deadline. Can I just ask some questions ?

1. I am in the support group of ESA, do I need to mention this in the journal after singing up ?

2. A couple of weeks back a jobcentre or DWP worker told me their screen will show a big red banner saying ESA MIGRATION, does this mean older problems with the migration process (where staff didn't know they were ESA migrations) may now be ironed out ?

3. If I manage to pass ID checks (using passport and drivers license) should this mean I shouldn't need to go to the job centre ?

4. I have 4 bank accounts, do I need to list them all on the UC application even though they don't total more than £6000 or just the one that UC payments go in to ? I have about £3500 in total spread out between them. Will listing 4 bank accounts and £3500 mean I am more likely to be asked for statements ?

5. My old car was scrapped in January as the cost to fix was way more than the car was worth, and I have an invoice from a dentist of £1000 for future dental work (so it is just a list of what needs to be done and cost) as I can't get an NHS dentist. I will also need to get a cheap second hand car. Whatever I list them as being in my account now will be totally different in a months time, I will be left with next to nothing in my account. So do I list what is in them now or what will be in there in a months time ?

6. I am also worried if they do a review soon they will see £3000 (£2k car and 1k dental) come out of my account in short succession. I presume I am allowed to spend that ? If the car is a private sale how do I prove what it was spent on ? I have not found a suitable car yet.

7. I live with my mother, do I need to mention this ? As it doesn't ask if living with parents, it just asks if I have housing costs or kids or a partner, none of which I do. I buy my own food and clothes, etc, with the ESA benefits money.

Thanks for any help !!