Details of the deal seller financing

[Alana Reynolds]

Hello I am Alana! 

I am looking at buying my grandmothers house as a potential flip or Brrr.

it is located in Pikesville MD Baltimore MD. 

fixed up it may be worth $250,000.

It needs a total rehab including AC , and plumbing . The house is 1,332 sq ft. 

i am working on rehab estimates but may be 50k to 75k needed. 

I want to have a few different offers to present to my grandmother and help relieve her of this house, its her biggest burden. That and money. 

my idea is to offer a seller financing deal. Something like $2k down $115k total

3 yr amorization 

I am not sure what interest rate to say or other parts of the offer. How much should I offer to pay monthy that will make it a good deal but help with her money problems? And different ideas so she has a couple offers to choose from . 

Also, do you have recomendations for financing on the rehab side? I was thinking I could go to local banks but I dont have an account with them so I am not so sure they would give me good options to lend money. 

thanks in advance I look forward to your thoughts on this!