Can I set up my Chart of Accounts in QB to have account numbers as I have them setup in QB?

Yes, just ensure you follow best practice for ensuring the accounts are identical on TU as they are in QB see the webinar under billing.

For instance

3600 Dues:3600 Bronze

This would be CoA 3600 Dues and sub account 3605 Bronze. Notice the no space between Dues:3605.

See Also
What's in a Quickbooks IIF file
QuickBooks & TeamUnify integration guide