Eli...you would have had no problem with just your fan clutch and 3-core rad. electric fans are cool though!!!! get it??

I ran my 88 ram 50 with a fubar'd fan clutch for 2 years and it was alright, the temperature only creeped up after about 1/2 hour of idling in HOT HOT weather, then once I started driving it would go back down almost immediately.

I think your electric set-up is more then efficient.