Buying first property from a wholesaler

[Cha Yang]

Hey guys, so I'm going head first into this real estate investing game. I closed on two properties this year ( 1 house hack and 1 flip that is currently under reno). I just recently got another property under contract from a wholesaler in my area. I plan to do the Brrr strategy on this new property and initially want to use hard money to fund the purchase and rehab portion. The HM lender was going through my finances and was a little worried about my liquid reserves (I used most my cash on the flip). If the HML falls through I still have enough alternative funding to make the deal happen. Question is 1) Since I have the property under contract can I change financing to cash instead of HM before closing? 2) When you buy from a wholesaler via an assignment contract, do you use the wholesaler's closing company or your own, and who is responsible for scheduling closing? Thanks in advance for your replies!