Steven,
That's not an unreasonable first attempt. I'm drilling one tomorrow and, because I don't know exactly what it is, I have decided to start with 2000 grit Abralon (P2000 grit), as my first surface. I want it to be earlier and more overall hook than either my Ultra Zone (@ 4000 grit Abralon) or the Twisted Fury Pearl (@ stock Rough Buff finish).
If 360 Ab, 500 Ab + 2000 Abralon pad does not provide adequate length, then add the missing 1000 grit Abralon pad, followed by the 2000 Abralon pad. That will smooth out the left over 500 Abralon grooves (as in a normal sanding process). The next, of course, is 4000 Abralon pad. Valentino's has a P3000 grit pad, but that may be too fine a line.
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"None are so blind as those who will not see."