In the glass half department, I would say you are extremely fortunate (in my experience), that you still get along (well). The pressure cooker of startups is an excellent way to stress, if not destroy relationships.

My advice: focus your energy and effort on the things that differentiate your startup. Since I doubt that will include your landing page, it needs to be effective and professional, and that’s it. The perfect is the enemy of the good.

First business I started, my partner and I both worked 100 hours a week, no vacation for the first two years. I could never have done that if I wasn’t really into it. Your mileage may vary.