All three must be fully understood and incorporated simultaneously in order for any of the three to be fully effective. 

The parcels are mostly rural vacant land.Our software is in three separate modules1) Manage the inbound acquisition inquires (CRMish) and the acquisition process.2) During that time engineering completes maps and other graphics and files to get it ready to sell.3) Then sale and then post sale payment management.Do any of you folks use an out of the box program that may bring us into the 21st century?

I moved into marketing after a successful run at commercial photography and graphic design.  

Just a few suggestions:Seller financing is an option, find a lender who will incorporate rehab into budget or purchase price, find a hard money lender to buy property...fix it up and refinance to a 30yr fixed.

However, after the initial deal or two, the question arises as to which route to go down, i.e whether to incorporate as an LLC,(or other entity) and if so as a C corp or S corp.

Thanks very much @Robert for the graphical presentation.  

I have previously been focused on Buy/Hold and now I am looking to incorporate Wholesaling to my Business Model.

Our tenant screening is incorporated into our software.

I can offer my expertise in web developing, digital marketing and graphics designing.

For the last year, I have been incorporating my wholesale properties into my website.