New Cooling/fan question

OK, lots to reply to.

1) I bought the car sans-engine and had to build one to get the car moveable...so I have no idea how it did before that. The car was originally an A/C equipped car (which is now totally gone).

2) I bought the radiator new (Autozone) and later had it recored to a 3 core.
3) All hoses and T-stat (180) are new and have all springs and such.
4) Water pump was installed new.
5) The top seal is installed over the core support.
6) Engine and cooling system only have 1500 miles on it. It never got driven much in the summer before last year, so I wasn't aware of the cooling issues until then. Coolant is nice and pretty green.

7) Temp gauge is a new VDO.

I am going to switch from a 50/50 mix to a 25/75. It RARELY gets that cold in Texas..but I'm from New York and just mixed up 50/50 out habit..not thinking that it never GETS that cold down here. I am also going to add Water Wetter. I may have found a suitable dual fan setup at Summit that will draw enough air when sitting still. I still think the hi volume water pump may be a part of the issue, and if I'm going to drain everything down, I may just slap on a standard A/C water pump and leave it at that. At idle you can WATCH the water swirling around in the radiator rather aggresively....can't imagine how fast it's moving at 2K RPMs.....

Also, I have added B&M oil and transmission fluid coolers. The fluid hits the trans cooler BEFORE the radiator, to keep from introducing as much heat into the radiator.