Power Steering Question

Hey guys,

I am picking up a '70 Duster within the next few weeks. I have a birth defect that causes me to have very low muscle mass, and I was wondering how truly easy the stock power steering is. My dad has had many old Mopars, but they were all manual. I've watched a few videos were people have said the stock PS is "overboosted" and it shows them turning the wheel with one finger. I can turn just fine at speeds over ~20mph, but below that is pretty difficult. I'm thinking about getting the EPAS steering that is $1,450 for a kit "made" to fit A-Bodies. But after watching a few of those videos maybe I can get away with the stock power steering. Would you guys know of a way to modify the stock power steering, if it isn't already easy enough?

Thanks, Cody