Once I setup a DST, can I keep the same bank accounts which are under my current LLC's or would I need to open new accounts? Is it possible to just have the bank change the bank name but keep the same

It is recommended to open a bank account in the name of the Parent DST to be used for all of the individual child series. Be sure to keep separate accounting/records for each individual child series. Changing the name on the account could cause liability problems related to commingling assets from the LLC and DST. It is recommend that a new account be opened.