I would use 2 or 3 feet at least of smaller guage hardwire along the bottom base of the run. It'll deter foraging rodents, crawling snakes, and raccoon paws trying to snag the chickens' heads or legs or stray dog or cat paws reaching through the pen.Garden coop plans but added a section to make the run bigger. Put the access/cleaning door bigger and on the outside of the pen. Put a ramp and porch on the side instead of through the bottom.
Porch and ramp on the left. Solid panel on the bottom right should help block some wind and snow/rain in winter.
Added a chicken yard access door to the solid panel on the end of the run.
LOVE the overhang roof - really a bonus you'll appreciate in rainy weather!