This arrange that you will have will likely be a headache(major assumption on my part).First - Do not do business with a friend. 

I typically don't comment on other's businesses unless I know from personal experience.

I also use amex for my business CC.

A business address?

I like doing business there.

Quote from @Blake McWilliams: Using and running a CRM is what you need to help the business you have in real estate grow.

Agents on teams will get leads, learn the business and leverage the team for their higher income and future business success. 

As well, does interior design qualify as a real estate business? 

It's a free country, you can run your business how you see fit:)That doesn't really work for self-managing property owners or what investors want from the PMCs they hire.So, yes we find solid contractors at Home Depots on Saturday mornings.When's the last time you've been at a Home Depot during that time period?

Plus I don't want to be in the electrical selling business, that includes no hookups to recharge electric cars.All I want to do is provide housing and collect the rent.