I have to drop my 2nd account sub soon. Being it is mostly mules, have a few questions.

If I was vip, and go f2p, how many chars can I pick? I will buy some adventure packs for dual boxing once I convert. I was thinking it was 2, then 4 once something is purchased.

If say I have 4 picked, and I delete one, do I get to pick another?

I will be out of town this week, and don't want to buy a buncha of char slots on main account just to move all my mule items over until I have had time to clear the inventories on the vendor/ah. A very time consuming undertaking I have been avoiding until I had more spare time. Which I will have, after I have to cancel though.
So if I could just pick some of the mules, clean them out and delete them, can I then pick the actual chars I need available for playing?