If Staghorn already has more than 50% working interest, they are not motivated to lease your interest and they would rather pick-up your acres in pooling. The third party guys have one shot at participating (via your mineral interest). I'd try to strive to increase my royalty interest to 1/4 first and get a smaller cash lease bonus. Most third party guys have a portfolio of investors that want to participate in the STACK. You should be able to make a really good deal.