PS pump can be a PITA, the pulley has to be removed in the truck then the pump slides out of the bracket from the back. pump is $70ish reman from autozone. the pump is much easier to remove if you take the radiator/shroud out, then there is enough room to get a puller on the pulley.
Kris is right you need a column rebuild, never done one so i can't comment on price, but do it sooner rather than later otherwise you might wind up needed a whole new column
ignition again don't know never had an issue.
as for the clutch i don't exactly know what you are asking. is the pedal hard to push or is it hard to get it pushed far enough to start the truck? these trucks came with a DMF dual mass flywheel, they are known to come apart at inopportune times. hopefully a stiff pedal is because a previous owner upgraded the clutch and put in a stiffer pressure plate. if it is hard to press the clutch far enough then the problem is likely the clutch rod/bushing on the end of teh master cylinder. the rod comes from the MC and connect to the pedal assembly with a plastic bushing in between. these bushings don't last long and then there is soft metal on metal wear that results in the hole in the end of the MC rod elongating and the peg on the side of the pedal assembly wearing. mine wore so bad that the hole elongated 1/4" and the peg wore in half adding up to about 1/2" of extra slop. you can either A get a new lever arm for the pedals, a new bushing, and a new rod or B one of these
Ford Clutch Permanent Fix Original Inventors Rod End Powerstroke Super Duty Also | eBay