I created a package and presented it to them. 

That sounds more likely, but it also seems like the laws tend to say explicitly things like, "The board of commissioners may, at their discretion (or "as the county deems necessary" or "when in the county’s best interest") carry the property sold on a recorded contract....."

Would I just continue to buy one house at a time or would it be better to try to scale up (larger package of sfh or small multis) I work a steady job and my strategy right now is buy and hold.

They create a formulaic marketing package.

Package and present with analysis and your partnership proposal to this list. 

These are the marketing packages created for each investment opportunity and typically go through everything from the business plan to the financials to comps, and much more (I'm happy to share some closed deal decks; just message me).You'll start to see how different sponsors lay out their business plans, and what they look for in a deal.

So many " investors " fail due to being lazy and not getting a base education in the subject but rely on the SALES PACKAGES to make you rich.

That should be a discrete cost line item and factored into the ROI, as most of these costs will be capitalized I imagine.

you can try and package both rentals with the new acquisition.

And typically, once a bank gets notice of an offer and receives a sellers short sale package (an application some would say) this will usually delay the foreclosure date..