Impositioning for printing

I have a file that is 200 records all in a specific order and duplex. I need to imposition as 2 duplex sheets per 13x19 press sheet. I need the finished stack to have 1 through 100 on the left side then 101 through 200 all on the right side so I can have the sheets cut down and put through a mailing inserter. How can I make this happen?