As far as the business card is concerned, to me personally I think having both things on one business card is acceptable .  

Also, you don’t need a business license just to look at properties, but if you buy a bigger property, like a multi-family unit, you might need a certificate of occupancy, depending on the local rules.For business trips, most expenses can be deductible, but if it’s part personal and part business, you can only deduct the business portion.

It takes capital to do this business and if you don't have it I wouldn't suggest throwing it into a marketing machine for wholesale deals.

When you say "we," are you speaking about your business or your personal tax returns, or does your business flow into your personal returns because you file as a sole proprietor?  

@Ella Marie, I can't speak on behalf of your market, but in my respective market, competition is tough, and the successful fix-and-flip vendors are often full-time operating businesses.

I'm sure he could give you some pointers on setting up a business and creative ways to save money.

Anyone that has sold items privately would have countered any offer. 

All the other real estate in my businesses are counted as assets minus the debt liabilities for net worth purposes and the business income that comes to me is counted as part of my personal income.

Or should I get a private mailbox in Oregon and use that?

With 25 years under my belt in construction and corporate environments, this is not the way you do business.