Question About a Lease Option Transaction


I’m currently lease optioning an investment property and I’d like some advice from a seasoned vet on how would I conclude the transaction after an agreement has been signed between both parties…

Basically the deal is structured like this

Sales price-125k
Gross rents-1800 month
expenses-350 month
property mgmt-180 month
PITI- 1200

Their upside is that their going to reduce the expenses to about 75$ per month after putting in separate meters

Now how do I finish the deal after getting the buyers down payment of 5%

Put it in a trust OR LLC?

Record a deed with the new buyer on it?

Have an attorney draw up a contract for deed which protects me?

None of the above?

Please advise, need the opinion of someone with experience, thanks and Much success to you.