Wholesaling - Almost There - Basic Question (Completing Closing)

[Solomon Ficklin]

My question revolves around closings.  I'm confident in my ability to find buyers and sellers, as well as getting both the purchase agreement + assignment contract signed.  However, I plan to treat this as a business and want to ensure I kill the closing in a smooth manner in order to not destroy the business reputation and trust right away.

What should I instruct my cash buyer and my seller to do for closing / what to bring to closing after both purchase agreement and assignment of contract have been signed? What should all be in my closing instructions to my title company?  At what point in time is the closing date set?  Thanks!