Method of running Romex across roof joists to recessed cans

I'm finishing the interior of my garage and will be installing recessed lights in an angled part of the ceiling pictured. I wanted to know if it is OK to drill a 1/2" hole across each ceiling joists (red in photo) to run my wire to each can or should I run the wire to the wall, down through the top and across the wall studs then back up (blue in photo)? Thanks in advance.