Bookkeeper - Reconstruct Books (4yrs) for small S Corp. Not on QuickBooks. Not a QuickBooks setup.

This is not a Quick Books project. This is a bookkeeping reconstruction project with a number of technical issues. Getting set up on Quick Books is outside the scope of this project. Ideally, I am looking for someone can handle both bookkeeping reconstruction and [potentially] tax filing for a small S corporation on a cash basis. But, the bookkeeping part is the first necessity and the most important part. Deliverables are: 1) A reconstructed set of books.2) Year-end trial balances.3) P&L and balance sheet by year. 4) Supporting schedules for weird flows: reimbursements, off-account payments, personal-card charges, direct client payments, etc. If interested, please respond with how you would address points 1 through 5 below. Based on your answers, I will be able to determine if there is a fit. There are no books. We need to RECONSTRUCT cash-basis S-corp books, create preliminary trial balances and return-ready schedules, to support preparation of the 1120-S/K-1s and related personal return items. There are no books for 2023, 2024 and 2025. I also need 2026 estimated-tax planning. Earlier tax years have been filed, based on just a few transactions per year. In total, there are roughly 1,000 organized business-source transactions plus separate schedules for reimbursed expenses, seeking-reimbursement items, and a limited number of off-account client payments. The source data is already organized. The current business-source register has roughly 1,000 rows: about 834 business checking transactions and about 156 business credit-card transactions. In addition, there are separate schedules for approximately 176 already reimbursed/pass-through items and approximately 97 items still seeking reimbursement. The unusual issue is a much smaller number of off-account client payments to personal obligations or directly to the business credit card. Complications: Formal books were not maintained. I do not use QuickBooks or an accounting program. So, this is reconstruction, not cleanup. I do have complete business checking and business credit-card transaction registers. Many client payments and expense reimbursements did not flow cleanly through the business checking account. Transactions include: 1. I paid for some corporate expenses with personal credit cards and want to deduct those payments 2. I paid for some client project expenses using personal credit cards. Then the client reimbursed those expenses, but made payment to the company checking account. - How would you charge for this project and what would be the process of working with you? - Would you suggest going year by year, completing the bookkeeping and filing or doing the bookkeeping all at once? Thanks,!