Given your experience with RV parks and MHPs, you already have a strong foundation for managing mixed-income streams, which will be valuable here. 

Stationed there almost three years, sold with profit and tax break for how long we lived in the house.

I'm not motivated, but the homes needed work I didn't want to do or I did if for strategic tax or debt shell game reasons.

I highly suggest you use our marketplaces to find trusted, investor-friendly team members: Tax Pro finder: https://www.biggerpockets.com/business/finder/tax-and-financ...Lender finder: https://www.biggerpockets.com/business/finder/lendersProperty manager finder (if you go that route and don't self manage): https://www.biggerpockets.com/business/finder/property-manag...

I couldn't understand why their credit wasn't better considering their income was what it was and their debts were not unreasonable.

Here are a few things that I like about the neighborhoods in Indy compared to other states: high rent-to-home-value ratio, consistent and gradual city development, relatively low property tax and insurance cost, affordable renovation service cost.

Asset manager role would be to give advice on property that could be value added and increase the income on a property by small or big tweaks.

You want to make sure the seller is getting their fair side of the deal but especially from a tax perspective, there are ways in which you can make it very lucrative for them.

Tax liens in MD are good for two years. 

That said there are some nuances and requirements to property implement interest tracing so ensure you talk to your tax professional ahead of time and keep the funds movement as clean as possible.