Timing question

[BMSJaX]

Alright I have a SBC 350 with a H.E.I. dist. Now 50 diffferent sources have given me 50 different ways to set timing. I am confused. One guy says;

1.)Plug vac. adv. line.
2.) Hook up timing light
3.) Read the timing while you increase RPM's until it stops advancing...record that RPM.
4.) Observe the total advance and adjust to 32-34 degrees (keep the RPM's up while doing this).
5.) Only mess with the advance springs if it took more than about 2,500-3,000 RPM to come in totally.
6.) Don't worry about your timing at idle. Just hook up the vac. advance when you're finished and that's it.

Now my dist gives full mech adv. at 1500 rpm. So should I set timing to 32-34 at 1500 rpm then? Does this sound right? I've been doing it at 2800rpm but if full mech adv. is at 1500 why go the 1300rpm more?