cash buyer vs. HML buyer

Hello. 

I'm a newbie wholesaler. If I have a pre-foreclosure deal and the seller is in NOS stage, do I have to find a cash buyer for the deal, or can I assign the contract to a HML buyer by delaying the foreclosure, since time is of the essence? I prefer a HML buyer because I think (I may be wrong) a HML buyer will pay more for the property, hence, my assignment fee will be higher. Based on your experience, am I correct?