Economics for non-SBA self-funded search deal

I've currently got a deal under LOI that's probably a bit too big for an SBA loan ($10.5mm EV with ~20% seller financing).

I know some lenders will do a Pari Passu loan on top of the SBA, but for various reasons I don't think that is in the cards.

I know typical economics are ~25% equity for a solo-searcher under the traditional model and ~60-90% on an SBA deal.

Where do the economics typically fall for self-funded deals without an SBA? Are there typical percentages or is it solely based on where the returns model out?