Things should I have prepared prior to offering/closing a deal?

[Adam Juodis]

Other than having a funding plan for the deal to be purchased, what other things should a investor have prepared prior to offering or closing on a deal?

I want to be prepared when the time comes to jump on a great deal. I already have received pre-approval for funding from a bank, but what other items can I knock out to make closing in the future easier? Do I need to find an attorney? Do i need to formulate any closing documents for when the day comes? Should I create a LLC now even though I do not have a single investment property yet?

Please let me know any helpful things I can knock of my list to prepare me for the day when I can actually call myself a true real-estate investor, thanks! :)