This is something you’ll want to plan for well in advance, understanding the timing, basis step-ups, and ownership structure, and making sure it's properly set up by the person passing it on.

The best person for the job may not be local.I would also recommend looking for an accountant who will work with you throughout the year.

I don't want to use my cash as I'm saving it for a personal purchase.

Quote from @Blaine Cox: If I am part of a 3 person LLC and we are flipping a property.  

For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.

The reason QuickBooks seems so intimadating, or any software program for that matter, is because we are using a computer to enter in our income and expenses instead of a piece of paper and a pen. 

I’ve been seeing a lot of questions lately about hitting income limits when scaling rental portfolios.One option many investors explore is DSCR-based financing, where the property’s cash flow is the primary focus rather than personal income.For those who’ve used DSCR loans:What were the biggest pros and cons for you?

I would just open up another personal account.What type of account that you open will not make or break your business.

Many investors hit a wall when banks stop lending due to DTI limits.
Others scale by:

Letting the property qualify itself

Using portfolio strategies

Planning exits before acquisition

There’s more ...

You will not learn your market from behind a computer screen.