I voted 1-3. I have that many (few) shots where I look up in my follow through and the ball is flying straight and long. Those shots are the ones that my follow through are in balance and I can pose watching it.
+1 for the putting green. On days that I don't have the time to play a round of 9 or 18, I go to my local muni, get a small (20-25) or medium (55-70) bucket of balls and work through irons/wedges and maybe of couple of drivers. This takes me between 10-25 minutes. After that, I spend 15-25 minutes putting and 10-15 minutes chipping (if the green is crowded I tend to skip chipping). Those 15-25 minutes putting 2-3 times a week are worth so much more than anything else I do during the week. I usually spend 2/3 of that putting time with 3-5 balls inside of 10 feet, varying the range all the way down to 2 feet sometimes. The other 1//3 of the time is spent on 20+ ft with just one ball, just trying to get within 3ft and finishing out as if I were playing a round. It is amazing how the 3 putts disappear when you learn to lag put for a nice easy 1-3 ft second putt.
Basically a 1-1.5 hour practice session gives me way more advancement than playing the 9 or 18 holes that I would rather play. I would suggest turning at least two of your four 9 hole rounds into range/green time. I'll be following this thread for sure, as if I had the time, I would be playing the same way that you are currently.