Tax Question - Mixing real estate commissions and Rental Income

[Dakota Mivshek]

Hi there, 

I have a tax related question. Things moved quickly these past few months, which has resulted in the creation of an LLC (S Corp status), Real estate sales commissions, & rental income.

Current status: Real estate commission income and real estate rental income are coming into the same LLC. Is that an issue?

I'm record keeping, but any advice would be great. What systems do you all have in place for solid record keeping come tax time.