Looking for advice on these 2 Subject To Deals!

Hello everyone, this is my first post here! I'm looking for some advice on 2  deals that I have available to me. I would love to make both work (there is no deadline date on these opportunities)

Current Financials Situation:

Primary residence 220k paid in full.

1 rental property cash flows 500 a month

45k cash available for investment and 20k in savings.

1st deal: C class property with a estimated property value of 120-125k. The owners are friends and they have a 3% mortgage with a payment of $600. They owe roughly 65k It Rents for $1200. . . . They will do a land contract. I can purchase the home for 110k with 0% interest. The only issue with that is they'd want most if not all equity up front (45k). I'm thinking about offering 25k down and pay them the 20k over 2 years. Which would bring my payment to roughly 1450 (1200 from rent) and additional $250 out of pocket. Then after the 2 years I'd only be liable for the mortgage payment. 

2nd Deal: Class B property with estimated value of 200k. Another friend. They owe 100k with a 4.25% rate and $900 monthly payment . I can purchase this one for 170k it Rents for $1700. He wants a down payment of 30k. This one would have a 40k equity balance. I can pay $300 out of pocket +$800 cash flow each month and pay off the 40k balance in 3 years.

Let me know your thoughts! Would you change the structure of these deals. I want to get them their equity asap and I can afford the $550 out of pocket each month for the 2-3years. Should I use the cash I have on hand or should I try and get a heloc. If you could only pick one which one would it be. Thank you to all who choose to reply!