Sure, I can do that manually, if you want. The site script doesnt allow it but I can process it myself and credit your account. Just contact me anytime you want to cash out for referrals and I'll do it for you. I'll just deduct the amount according to the usual cost of the referral set you want.
Is this something you think other people would be interested in as well? I could make it a regular feature if enough people like it.