If you are planning on spending all the RRs on non RR producing items anyway, then go ahead and just do 2 transactions. The first transaction with all the RR producing items, then a second transaction to spend them all. Your out of pocket will be the same in the long run.
As long as all your RR prducing items are different promotions you can combine them in one transaction and still receive all the RRs.
“Life is nothing without a little chaos to make it interesting.”
― Amelia Atwater-Rhodes, Demon in My View