The disk lights only need a deep regular (4") junction box, so they might be good if you have low ceilings.The LEDs I used were Cooper Halo 6", 1200 lumen, 2700 K. 

If you want to buy this deal you know going in that you might have legal issues to deal with early in your ownership of this property.Because you are dealing in a he said she said situation now the best way to cut down on any eviction or legal expenses is to get everyone's understanding of their position from them in writing.Require that the listing broker prepare an estoppel containing known facts, as they've been given to him by his client, have s/he get the seller to sign the estoppel, and require s/he submit the estoppel to each tenant for signature.Sometimes tenants won't cooperate and return a signed estoppel but the seller should and its on them to provide you full knowledge about the security deposit and the current status of each tenants rent. 

If I have no cooperation from this tenant will I be able to easily evict her to be able sell the property?

(Bet she let's you in this time...funny how rude people get a tad more cooperative when they find out it's a strategy that won't work on you).  

Oftentimes this is all it takes to get the tenants to cooperate.

Grandchildren live in the house now and are very cooperative on moving they want to get rid of it and move on.

This would of course require cooperation of Buyer 1 and Buyer 2 may want to compensate them for that, so this option is mainly there if the  negative consequences of drafting a new agreement outweigh the consequences of compensating buyer 1. 

I hope, for your good, the market cooperated with you, I'll just stay with Jon's thinking on this one...:)

@Tim Cooper - given your experience, do you have thoughts about the quality of newer construction compared to the older construction?

In fact, I personally think this explains the entire reason for the existence of contracts and contract law: because sometimes things go sideways, so we need rules to work things out when cooperation can’t.Let me attempt to make a case.I think even the most hardened reader can feel this "moral core" if they consider a contract which is entered into in good faith by all parties, but for reasons outside everyone's control, the contract becomes unsupportable in some way for one of the parties but not the others.