lease option

This house is in Florida. Owner purchased for 110,000 in 4/2011 had it rented for awhile she was planning to move into the house herself but her situation has changed and now she wans to sell.
bought for 110,000
asking 145,000

I have the opportunity to lease with option to buy for 18 months at her asking price. I would like to offer her less because the house needs some cosmetics paint, lighting,etc…Similar houses in ther area have sold in the 120’s to 130’s.

House in the area rent between 1300-1500 a month.

How can I put this together?

Offer the seller what works for you, by first figuring out what the seller wants; giving it to him, and then taking everything else.

Otherwise, you’re negotiating with yourself. Just saying.