Buying a Home wondering what to do with funds for 30 days

I am purchasing a home and I just liquidated my brokerage account into cash to cover the 20% down. If they accept my offer today I have 30 days for closing. Where should I park the money for the time being or should I just leave it in sweep? I was thinking maybe SWVXX and then sell it 3 days before closing so it can be ach out.

EDIT: They accepted the offer and I am just leaving the $$ in sweep per most of the comments. Down payment will be wired direct from Schwab who said it will be no problem.