You don't need to worry about the magnetic pickup option. On mine, I installed a CRT performance HEI distributor and a MSD off road ignition box. The good thing is that my CRT distributor came with a hookup for the MSD box, it was plug and play. This allowed me to do the regular nutter before installation. With you allready having the jacobs, not sure how you proceed. However, I would forget about the magnetic and consentrate on oem setup. Others I'm sure will have some more helpfull tips.
1987 wrangler, 258 I-6, 5-speed.
2007 liberty sport 4X4, automatic
2009 ford ranger 4x4 FX4 OFF/ROAD, 5-speed