Assume/subto then second mortgage?

[Nathan Cain]

There is a house that has solar panels that haven't been paid off yet. The owner has a 3% apr loan with 23 years left and a balance of $33k on the solar panels. He says I can assume this loan instead of building them into a new mortgage at a way higher interest rate. 

He has a mortgage with $120k left for around 29 years or so at 3.75% apr. He is asking $211k, which is $58,000 above his mortgage and his solar panel loan. He's also already told me that is negotiable. (He is now selling without a realtor.)

What is the strategy here? Is there a way for me to get this with no money down? Could I get it under contract by assuming the loans (or subto) and then get a second mortgage? I assume I can't do that because I wouldn't own the place yet. Maybe I get a private money loan and then use a second mortgage to pay it off? 

Any other ideas?