Crossing US Border as a Canadian Resident for Meetings (Urgent)

[Suzanne P.]

As a Canadian resident and recent flip investor I will be travelling to the United States next week to visit my properties (which are in the final stages of completion) and to have meetings with my hard money lender, real estate agent and construction manager. With increased security checks and immigration issues in the United States, what do I need to tell the border officers when I cross the border (by car)? 

Do I need a special visa (B1 working visa)? The purpose of my trip is actually two-fold - I will be spending 2 days purely for leisure doing some sightseeing and I will have 3 days with property visits and meetings. My properties are owned by a US corporation which is owned by my Canadian corporation, so I do not derive income directly from the US but only through profits that are repatriated to Canada which are then paid out to me by my Canadian company, not my US company. 

What kind of documents should I bring to as backup? I could bring the HUD statements (showing ownership of the US properties), my US incorporation documents, my Canadian incorporation document (the Canadian company that owns my US business), information about the ownership of my house in Canada (to prove I have existing ties to Canada and no intent of relocating to the United States, etc.)

I am a little apprehensive of this and i want to make sure that I do everything correctly so I will not have any problems in the future with crossing the US border. Thank you in advance for any advice you can provide quickly (since I will be leaving on Monday...).