Seller finance attorney in Colorado

Hello friends, 

Im currently in negotiations for a 100% seller finance deal in Grand Junction (Mesa County) Colorado and would like to know if anyone has any recommendations for one. I just need the promissory note as well as the deed of trust and possibly a personal guarantee as i will be purchasing with an LLC. Ive already talked to a few and some said that I as a buyer am not the one who is hiring the lawyer that it needs to be the seller who contacts them? Is this correct or can i as a buyer have the contract written up and send to his agent?

The fee varies wildly between them. 1 asked to take a non refundable retainer that goes toward the billed hours ($2500) another is a flat $1500 fee.  1 is charging $595/hr  another is $495/hr. In this situation is one attorney going to be better than another on a seemingly simple transaction? 

Thanks everyone!