Rack and pinion steering

Hello to all, Just a question regarding rack and pinion steering. I am going to install a Contol Freaks IFS on my Challey and can't decide whether or not to go with a power rack. I have experienced stock manual steering in older mopars before and only remeber how hard u-turns were. Is manual rack much easier than stock manual? Will a power rack eat up much HP? Any and all is greatly appreciated.

Gonna run a big block? How about big front tires?

If yes on either, I would do Power and just get an adjustable line pressure valve (Heidt's makes one).