I'd find a mortgage broker who understands your strategy well enough to advise on products designed to help you scale. 

It all seems pretty feasible and attractive, but curious if there are many lenders or investors actively taking advantage of the program.   

For both short- and mid-term investors, the market's diversity and relatively lower entry costs make it an attractive option.FYI - Philadelphia has a tenant-friendly legal environment, which can present certain challenges for landlords

It appears they are hoping to attract people that can find deals but don't know how to raise money.

Fixed income U.S. treasury bonds are not  attractive at all if you're being paid back with dramatically debased dollars with lower purchasing power. 

I understand home designs are pretty expensive, and cannot just be applied to any lot/existing neighborhood.

It's hard to give an answer without knowing your tenants, how many of them there are, what amenities are in the area, and more.If you had 10+ tiny apartments, a game room or fitness area may be attractive.

Preliminary planning and design work are underway, with the project expected to bring significant value to the portfolio and contribute to the revitalization of the community.

What do you think makes Texas such an attractive place for entrepreneurs in the real estate space?

Overall I would say it is a great area to live in, because of jobs, cost of living, laws in place (this one more for the landlords), attractions, colleges, etc.