I think you are on the right track with your strategy thought at the end of your post by building some profits to pool more dollars for bigger investments or more in quantity.

Properties are assets, they hold a quantifiable value and use, MONEY is not such a thing, it's value is based on the quantity of such int he system and therefore more of it created makes all in the system worth less BUT since a dollar bill can't change it's ink to read "sorry, now $0.97 bill... oh wait, $0.89 bill now" what happens is the assets of value GO UP.

Since you are new and an unknown quantity, they will want to err on the side of caution.

Can make more $$ with quality clients then quantity as a wholesaler in our opinion.

Yes there are people who have scaled up very quickly but ask I will venture to say that none of them said that it was easy work to scale that quickly.My lesson is that quality does beat quantity over time. 

If you provided your last project as an example and could get them to do the takeoff quantity for the various options they should be able to give you not only costs but also schedule impacts...the cheapest option may take an extra 2 months to construct, so what's your carrying costs on that?