Basic Tuning: HELP!

As far as the Vacuum goes I was trying to accomplish getting the most vacuum durring idle after I had the timing adjusted "correctly" LOL, but I think it was a mute point considering I seem to have found out that it was way too advanced.
I do have a very nice timing light actually, but at this point, it seemed like I was instructed to adjust these items based on "RPMs". Im sure I misread / misunderstood!

While I do agree with "if it aint broke dont fix it" I am trying to learn a bit here just as much as I was trying to get it dialed in. I have to be honest at this point I will be hesitant to make too many adjustments considering its running pretty decent. BUT I can tell there is still room for improvement. So the possibility is still there. Just not this week. Ill run it to work and back tomorrow and see how she does. I have been making the standard commute to work. 18mi. trip about 2/3 of it is on the interstate and I cruise around 3000 RPMs, at around 65/70mph. (need to hook the Speedo back up)
Ill let you all know what I see after tomorrow. But again my test driving after my "by ear" adjustments proved to be much, much better! It has the torque back that I remember from back in the day.
I kind of figured when I switched from 2" exhaust to 2-1/2" that it was the cause of my torque going down.
While the 318 heads have smaller ports and valves, the combo proved to be very Torquey <---? I loved it that way, but it was an obvious swap when I had the opportunity. I have a set of J-heads that were supposedly a fresh rebuild, but then when I went to put em' on, I seen glass beads holding a valve open. I was had! They actually look good, it all looks fresh but I just didnt trust them after I seen that.
Once they are on it will help flow a lot! Since I drive it on the street, I prefer to have the good torque. Its much more fun that way!
Thx again for your time and knowledge guys.
Ill keep you posted.