95 Mustang 2 speed fan for a 351?

I just swapped a mildly warmed up 351 Lightning into my
89 Mk VII LSC, along with a heavy duty 3 core radiator.

Would a 95 Mustang 18" 2 speed fan with a stock Mustang
shroud adequately cool this engine?

My alternator is 100 amp and I'm hoping this would
handle this type of fan. I can't afford a 130 amp
right now for a Mark VIII fan.

I don't do a lot of stop and go city driving.

Any suggestions for a good 2 speed controller or
wiring setup?

Thanks!