In the Time Finder you'd want to use IVs (Standard Seed) as the method, and in the main window you'd use Gen 5 PIDRNG. Both use the encounter type of Stationary Pokemon. You'd get the exact delay from calibration, but for the most part yeah the delay is 1 second for a DS Lite. Assuming the delay is 1 second, right. You'd press A to boot the game from the DS menu 1 second before the time for your seed. :)
What are the proper times to press, and subsequently release, the required button presses? Once I hit A to load the game, do I start pressing immediately?