best cooling setup

[6flee3]

Live in Sacramento, sometimes gets kinda hot ... Working on my 63 fleet, 350/350/3:08 eaton possi, old radiator finally gave out. Found one from American Radiator, looks nice, came with a 16" electric fan free, also free shipping.

Now for the questions ... what's best:

run the old clutch fan, no aditional fan?

just the electric? I know some run just the electric, if so how do you hook uo the sender?

both?

correct thermostat temp?

Would appreciate any help with this, wanna hook this up right ... Thanks!