Mini starter solenoid chatter

[RBConvert]

Swapped out the Chrysler starter for a mini; battery is in the trunk. Using a Ford solenoid in the trunk to cut the power during Run.
Mark from MAD Electrical recommends installing a relay between the Ford solenoid and the starter to eliminate "solenoid chatter"; where the mini-starter solenoid fails to disengage.
Searching this forum I don't see any other members posting about chatter. Is this going to be an issue?

 

[RBConvert]

Continuing; Mark says that you can't jumper the solenoid on a modern mini-starter because the permanent magnet motor in modern starters will re-engage the solenoid via the jumper.
So would I run the 1/0 gauge to the starter lug and the brown wire from the starter relay to the starter solenoid?

 

[Inertia]

I have had misc vehicles have similar "weak signal" to starter engage, for misc reasons. The relay to starter never failed to cure it.. Racecars too.