Deceased Parents home is Co owned by myself and sister

[Jeff Irwin]

it is about to go on the market. 

However,  I was wondering if I should buy my sister out since I already have half the equity and turn it into a rental? Selling price would be approx 180,000 and rents for nice homes in our zip code are 1200-1400. That would be less than 1% -----If I had to buy the whole thing. But, since I already own half, I could buy her out for 90,000 + closing bla bla black

Please give me your thoughts.