Creating a lease deal with these numbers

[Chibuzor Alumba]

Hi BP Community, it's so good to be back here.

I have been learning about creating Sandwich Lease Options, and using them to help homeowners create a Rent-To-Own structure with potential buyers. Two home owners have contacted me with their information. 

Help me analyze these deals and figure out what numbers to put into my portion of the Lease contract to help me get 

i) A lease option assignment fee

ii) (Maybe) Some monthly income

Deal 1:

1. Asking Price: $ 389,900

2. House Estimated Value: $ 420k - $440k (Not verified - How can I do this in Canada without being a REA?)

3. Do you have a mortgage: Yes

Some mortgage information

4. Mortgage Amount: $ 280,000

5. Interest Rate (%): 2.24

6. Monthly Payment: $ 517.80 bi-weekly (

7. Does the monthly payment cover your principal, interest, taxes, and insurance?: yes

Deal 2:

1. Asking Price: $ 162,000

2. House Estimated Value: $ 172,000 (Not verified)

3. Do you have a mortgage or own the home free & clear?: with mortagage

Some mortgage information

4. Mortgage Amount: $ 110,000

5. Interest Rate (%): 2.98%

6. Monthly Payment: $ 700/month

7. Does the monthly payment cover your principal, interest, taxes, and insurance?: Yes

Any help, advise, resource, or encouragement you all can provide will be very much appreciated.