Also consider having a look at @Todd Dexheimer's program as well. 

Section 8 has good points and bad points to it, just like any other program whether it is a government or private program. As

The program as implemented creates an incentive to NOT improve ones circumstances and for landlords to take side payments. 

You could preserve capital for other investments by going with a lower down payment program as mentioned (a popular route for many real estate investors) or load into the property with a higher down and increase cash flow and maybe plan to own it free and clear in a short time (sort of a Dave Ramsey type real estate investing).

Is the usda program a safe option for a future investment/ asset?

This would go through the pre foreclosure sale program as it's insured by HUD, the borrower bought the home with a FHA loan it appears.

I see a lead paint program as a necessity to force landlords to update their properties, many owners will have to decide if they will re-paint or install vinyl siding/windows or dump their properties to new owners who will.

I'm glad to hear you describe her program as "incredible".

Buying OR not buying depends on the student and not on the program! As

Bottom line, you can view Dave's program as what it is, or you can expound on the program and take it further.