So, I decided to have another go at trying to combine running regularly with lifting heavy things. I did a short run/walk yesterday. It went well. Today, my quads were a little sore, and my left hip was a little sore (gotta watch that), but otherwise, I feel great. (My knees always feel fantastic after I run. You're weird, knees, but you do you.)
I was a little worried that post-run soreness might interfere with today's weightlifting workout, but it didn't seem to. (Though in the future, if I'm smart, I'll run on Saturday morning, to give myself more recovery time before weightlifting.) I deadlifted 175lbs for 3 reps, which is a new record. My goal of deadlifting 200lbs looks like it may be in reach sooner than I ever expected. (Of course, the day after I lift 200lbs, I'll set a goal of lifting 250lbs.)
Tomorrow is definitely a rest day. After that, we'll see. Right now, I'm aiming to run just once a week, although I am hoping to increase that to twice a week in the, er, long run.