As a newbie here, I don't have much to contribute generally.

Additionally, it sounds like you are keeping this as your primary residence when you are not away with work traveling, so if you were to have a roommate who is contributing toward the bills and you both live there, again no issue that I can see.

@James A.you can only contribute to a Solo 401k plan from your earned self-employment or business income.

@Russell BrazilMy apologies for not replying sooner, I am unable to tag others from my phone it would seem.For my first purchase, I am trying to stay at or below $100,000 so $5000 would be the highest down payment contribution from the SETH program and that 5% interest would stay.  

I've lived in Philly almost my entire life and focus mostly in Fishtown and South Philly.I look forward to learning all I can from the people here and hope to become a contributing member.

I am still a college student looking to learn and contribute all I can to the world of real estate.

Your contributions to the dialogue that takes place here will be most welcome.  

Lets talk about if/how I can contribute. 

Can they contribute 50% of the down payment and closing costs without it going through me or being taxed as a gift or anything else?

As a new member I appreciate all of the time and effort that is put into this site from everyone so looking forward to contributing where I can!