Correct.
One thing I would think about if I were you before doing this though. Personally I would look for a way to eliminate one of the AUX coolers. I'm sure there's a way that you could keep (or improve) your current cooling ability and eliminate some lines and fittings. You could probably sell your existing cooler setup and recoup some of the cost of a new giant single AUX cooler. The TruCool LPD47391 40K comes to mind.
https://www.amazon.com/Tru-Cool-LPD47391-Pressure-Transmission-Cooler/dp/B0060NKA1U
Kind of a personal preference thing, but if you're going to drop the cash on converting to AN it makes sense to me to run as little hose and hardware as possible and use the nicest cooler you can. That TruCool LPD47391 I linked has 45000 BTU of cooling capacity. I'm not sure exactly what that Imperial you have is rated at, but it's a plate and fin style as opposed to the stacked plate style like the factory AUX cooler and that TruCool so it can't be super efficient. I'm willing to bet that you'd see a much bigger temperature difference running just that big TruCool instead of the two smaller AUX coolers you have now. Plus you'd have fewer connection points, and therefore less money in AN hardware and fewer places for issues with leaks. Just my two cents.
One thing I would think about if I were you before doing this though. Personally I would look for a way to eliminate one of the AUX coolers. I'm sure there's a way that you could keep (or improve) your current cooling ability and eliminate some lines and fittings. You could probably sell your existing cooler setup and recoup some of the cost of a new giant single AUX cooler. The TruCool LPD47391 40K comes to mind.
https://www.amazon.com/Tru-Cool-LPD47391-Pressure-Transmission-Cooler/dp/B0060NKA1U
Kind of a personal preference thing, but if you're going to drop the cash on converting to AN it makes sense to me to run as little hose and hardware as possible and use the nicest cooler you can. That TruCool LPD47391 I linked has 45000 BTU of cooling capacity. I'm not sure exactly what that Imperial you have is rated at, but it's a plate and fin style as opposed to the stacked plate style like the factory AUX cooler and that TruCool so it can't be super efficient. I'm willing to bet that you'd see a much bigger temperature difference running just that big TruCool instead of the two smaller AUX coolers you have now. Plus you'd have fewer connection points, and therefore less money in AN hardware and fewer places for issues with leaks. Just my two cents.