We spent the majority of our 3hrs on tip in and cruise light and medium throttle. Being a standard was almost like cheating. We filled up with CHEAP no name 87, drove with a/c on during a hot August day. With smooth roads and the manual transmission you could feel surge with too much timing. We pulled 2-3° when we felt surge. It's a heavy 4x4 Trailduster so mileage will never be great, but it runs and drives awesome for a 3.55 gear 4x4 with a mild 360.
We changed the spark plugs after tuning to visually check the tune for detonation. With the fresh set of plugs several WOT pulls were made and then visually checked the plugs. It is at least 2 steps rich, but it's safe and he's happy.
I see needing more tools to tune having an automatic, loud exhaust, and a lumpy cam. 3hrs won't get you close.