If you're planning to resell and they're all on their own individual parcels, you'll have to figure out what they're worth individually if you were to sell the land with the mobile home on each parcel. 

One idea I have is to start buying and re-selling smaller lots of land in super rural areas of Utah, and using those smaller properties to build up enough money to afford 2+ acres in a more expensive area like Utah County.

If you don't own the property and want to sell it for someone else, that is where you are acting as a real estate agent and would need a license.So, wholesale is where you purchase a property, then resell it quickly for a "slight" mark-up without doing anything to improve the property. 

You can always resell and move up in your market for the next 10 years. 

Don't want them re-selling the lot, since we did lower far below what I consider market price.b. 

Or is there a way to partner with a developer to co-invest in rennovating them and either rent or resell? 

You may not even need a discount off the current price, even if it's at FMV.You can't re-sell it for higher than it's being offered at while it's listed for sale. 

To educate myself, i bought 5 books on Amazon so far.  1.The Book on Flipping Houses: How to Buy, Rehab, and Resell Residential Properties2.Real Estate Investing QuickStart Guide: The Simplified Beginner’s Guide to Successfully Securing Financing, Closing Your First Deal, and Building ...

Since they won't be able to resell the Note on the secondary market, you need somebody who will loan their own money. 

Otherwise, if you have time to call around and find your own lender, then I would think the broker's services wouldn't be required.In my opinion, rates don't change that much since they are all reselling to the same secondary market.