From my experience with my combo over the last 20 years...

Unless yer gonna ice-down the carb, the percolation issue is reduced with the addition of 'real' fuel...

Excessive heat is the enemy...

I have a 6-quart pan, in addition to a deep trans pan w/cooler, and a 3-core rad...

When I shut it down, it's at 180...

Not 195, not 210...

An electric fuel-pump is not a necessity, and not necessary...

It's your call...

I'm only offering what's worked for me...