Hi there, hope you are enjoying BYC!
If your coop won't be locked up at night and will be open to the run then do hardware cloth on the whole thing.
If you will lock the birds up at night with NO run access... then it's okay to go with something less expensive than hardware cloth. Otherwise weasel type animals can make it in.
Depending on your location, covering the top of the run with something solid like corrugated plastic can be hugely beneficial both for blocking rain/snow and for providing shade in addition to the safety cover it provides.
I have found that
old, corrugated metal roofing... works great as the bottom run fencing.. if folks just happen to have it laying around. Checking Craigslist farm and garden, materials, and free sections and doing so on a regular basis might yield something usable and affordable.
Adding your general location can help folks make their best suggestions possible at a glance... for example it might tell us things such as approximate predator load or annual weather conditions you face which can heavily impact proper suggestions.
Also shop around... for me HC was cheaper from
Amazon than my local Home Depot, even delivered.
Best wishes for a coop and run with many layers of security!
