Honestly with so few transactions you could probably do Quickbooks Online yourself. Link your bank account and credit card and then all you have to do is categorize transactions.

I own a business helping primarily startups and take on this type of work at minimal or no cost. This is pretty low volume work and the benefit to us is that we establish a relationship and as you grow, we can earn our fees once you are through the initial phase getting a foundation established. The goal is for you to focus on building your core business ops and have some peace of mind that your back office is not going to fall apart along the way. I will PM you my contact info, reach out if interested in chatting.

I am a partner in a firm that does a similar thing on a larger scale (not startups). Based on what Project Gemini posted above, it sounds like his approach would be your best bet. Call him.