I'd level the cabinet base to the flooring by shimming it up so your cabinets are square. This will help you avoid any alignment issues or problems keeping doors shut. If you angle the counter top I would not go anymore than 1/4" over a 2' deep counter. It may be mor trouble than its worth because you will always have residual water to wipe off if level or angled.
Toys: vertical 26" custom homebuilt, weber OTP w craycort cast iron grates & mini WSM