Please hire an accountant. Small companies should not need so many accounts, because the business is not so complicated, but the accounts should be detailed, because small companies have low requirements for profits at first, so they can only start slowly. There must be a general ledger and a journal. You are talking about various forms, what kind of bank balance reconciliation form? This statement should be consistent with the company's final bill, balance sheet, income statement and owner's equity statement. I study accounting, so we will use that UFIDA financial software again. The teacher said that most companies are using it. I think the division of labor of the courier company should be clear and the business process should be familiar, so that further planning can be made.
I'm just a student, just giving some advice. I hope it helps.