I am currently working with one who is good bookkeeper in my point of view.

From what I've seen both as an REI myself and the owner of a bookkeeping firm that serves REIs, it's very hard to qualify for lending using a rental portfolio's income.

Our virtual assistant agency specializes in catering to the unique needs of real estate professionals, offering support in areas such as lead generation, bookkeeping, property management, and virtual assistance. 

This makes record and bookkeeping easier plus you will only need two Corporate Accounts, for the Umbrella LLC (a Checking Account and a Savings Account).

For a portfolio this size, I would recommend hiring a bookkeeper.

Then I eventually remembered that I love real estate, not bookkeeping or accounting!

What I like about it is that it integrates most things you just mentioned: leases, rental payments, tenant screening and it all integrates with your banking and bookkeeping.

The ultimate goal is to reduce the likelihood of capital calls, while at the same time streamlining work for the bookkeeping team.Example: We're buying a 40-unit apartment complex (in Michigan) with an annual property tax bill in year 1 of approximately $50,000.

I started using Baselane for tracking metrics and bookkeeping.

I use Baselane for all of my properties to do: banking, bookkeeping, guest vetting (MTR and LTR), draft leases (MTR and LTR) and collect rents (MTR and LTR).