My suggestion is to have a very predator-proof coop and always lock them up at night. Also have a decent sized, fairly predator-proof run to keep them in during the day when you want to lock them up. I don't know if you are planning on getting chicks to raise or already grown hens, but when you first put them in the coop, lave them in the coop for about a week until they get used to it as a safe home where they want to be at night. Then let them have access to the run. Leave them locked in the coop and run for at least another week so they can get used to that. Then, when you are going to be home and feel comfortable doing it, let them out for about an hour before sunset. Hang around where you can watch or at least hear them if something happens. Then adjust as your comfort level allows.
By predator proof coop, I mean a coop that has dig protection, either because of the floor or one that has an apron of wire around it. By apron I mean an 18" to 24" strip of welded wire or better, preferably 14 gauge, preferable plastic coated but at least galvanized, laid out horizontal to the ground and attached to the bottom of your coop. You can leave it on the top of the ground and weigh it down with rocks or something, or remove the sod, put the wire down, then replace the sod. An animal starts to dig, hits the wire, and does not know to back up. If you have a wood or concrete floor you obviously don't need an apron. Use decent hardware. Raccoons are strong and smart. They can rip off the cheap stuff and can open simple latches. Cover any opening 1" or larger, either blocking it off or securely attaching hardware cloth over it. They can climb real well too so make sure you cover any openings under the overhangs.
I say fairly predator proof run because runs are pretty hard to 100% predator proof unless they are little bitty things. Since you know you have raccoons around and the evidence is that your area is in their hunting territory, I'd suggest a welded wire fence around the run, also with an apron. 2" x 4" welded wire, at least 17 gauge but preferably 14 gauge, should work. Around the bottom 18" to 24" of the run, in addition to the welded wire, put chicken wire or heavier to keep the raccoons from reaching through the fence and grabbing hands full of chicken to munch on. Since raccoons can climb real well, I'd suggest a top on the run. The welded wire will keep the raccoons out, but you might consider a solid top to keep the run dry and provide shade. With your carpentry skills you can probably make this run predator proof, but I still strongly suggest locking them in the coop at night every night.
Since you are new to chickens, I'll give you some links to Pat's articles. Although you are not in a truly cold climate, I think all three should be required reading before anyone builds a coop and run. They are excellent. I grew up in East Tennessee, the Cumberland Gap area. We never insulated or heated our coop and the chickens did fine, even in below 0*F temperatures.
Pats Ventilation
https://www.backyardchickens.com/web/viewblog.php?id=1642-VENTILATION
Muddy Run
https://www.backyardchickens.com/web/viewblog.php?id=1642-fix-a-muddy-run
Pats Winter Coop Temperatures
https://www.backyardchickens.com/web/viewblog.php?id=1642-winter-coop-temperatures