Getting the cooling system to work rite is not rocket science..
An there are no qwikee short cuts..

The original OE Mopar systems were pretty good so thats where you start..
1. Chuck the electric fans
2. Pull the factory radiator, flush it kleen and here increasing the core in size can do wonders go to a 3 or 4 core
3. Flush the block/heads
4. Use the factory shroud but make sure the fan is about 1" back from the radiator, we like to use a clutch fan
5. Refill the system with 50/50 mix
6. Make sure to use a quality thermostadt, 180 degrees is fine

We have been building/racing big block Mopars for almost 40 years and the majority of cooling problems are created by parts mismatch and/or faulty installs. Take it step-by-step and you will be surprised on how well the OE cooling system can work..
Here in So Cal it can easily hit 102-105 degrees and our cars typically run 200-205 degrees in slow stop/go traffic. If the outside temperature is more normal like 75-85 degrees they typically run 180-190 degrees.

We just fixed a friend's 340 Dart GS was running about 210-220 degrees, some wizbang said mount this dual electric fan system..
Current jumped 50 amps on the charging system and no improvement for cooling..

Threw out the dual fans into the dumpster added a shroud and it dropped 15 degrees.

Just my ..