Thanks for the details and welcome to the Community, @jrpig.
Allow me to share some insights and steps about recording business expenses paid with personal funds in QuickBooks Desktop (QBDT).
Generally, it's a good practice to avoid mixing business and personal expenditures. However, there are times when you have to such as in your case.
First, there's no need to make a personal account in QBDT. You'll have to retain the current opening business account you've created.
Second, you'll need to create a journal entry to track the business expense you paid with personal funds. As always, it would be best to consult an accountant on what accounts to use to ensure your books are accurate. Here's how:
- Go to the Company menu, and then choose Make General Journal Entries.
- On the first line, select the expense account for the purchase, and enter its amount in the Debit column.
- On the second line, pick the Owner's Equity account, and then enter the same purchase amount in the Credit column.
- Hit Save and close.

Third, you can create a check to reimburse the payments from business to personal account. Here are the steps how:
- From the Banking menu, select Write Checks.
- Choose a Bank Account.
- Go to the PAY TO THE ORDER OF section and then pick your name.
- Tap the Expenses tab, and then choose the owner's equity account and then enter the amount to reimburse in the Amount field.
- Click Save & Close.

Also, I'd recommend entering a memo in these transactions, so the other members of your business can easily identify them.
You'll want to modify and print checks in QBDT. This way, you'll have the info you need and save a copy on hand.
I'm always around to lend a hand for more QuickBooks-related concerns you may have. Take care and have a great day.