So my initial goal for this build was lots of low end power as opposed to HP. My car is a 72 B body so it's pretty heavy.
My current testing and adjustment has been mostly from a stop and a couple of low speed "passing gear" performance.
I have my initial set at 16 now mostly because I am concerned about my total timing numbers even though I am not hearing any detonation or pinging with 28 initial. I will be doing a combination of highway, twisties, hills and around town on my trip so this a pretty good test. I will also be running my AC at times. I'll mess with it some more next week.