As long as your minimums - last year's taxes (times 110% if applicable), or 90% of current year's taxes - are covered by the withholding from the RMD, it doesn't matter where your income is coming from.
Thanks audreyh. Will look into what my State allows and if not the same will simply pay the entire State amount in April and the Federal with the November RMD. As my State taxes are ~25% of Federal, this works well for us.