Hello,I need help analyzing whether buying my elderly in-laws' home to help them pay off debt could be mutually beneficial for my husband and me as well. 

How is it beneficial?

It would be beneficial to start connecting with a loan officer now  to understand your options for the next purchase, and of course to stay active in the local market to build familiarity and spot good deals. 

For tax lien investors, this usually occurs after the redemption period ends and a tax deed is issued.Relevant Code: According to 26 CFR §1.1223-1 and IRS guidelines on capital asset holding periods, the clock for capital gains purposes starts when the taxpayer acquires a beneficial interest or legal title to the property.

I did this, and while it was helpful, it wasn’t as beneficial as I initially thought.

Check out their products and see if they can be beneficial for you

I have also heard having each property under its own LLC can be beneficial, so that in case of a lawsuit they can only potentially take the one property.

I'm a resident of Jersey and thought focusing on PA to get started would be beneficial because the taxes are lower and there seemed to be more listings at lower prices than there are in NJ.

Its specific application and the actions of the principles at play are what determines if it is beneficial or not for all parties.

I may be partial but seems a pretty obvious top 5 choice.