The perfect is the enemy of the good.
Quickest and easiest power steering upgrade would be mini truck. No grinding(other than to remove the oem manual box), no cutting the frame, no shock tower swaps or alterations. Pretty much plug and play with an early mini-truck ps box and whatever pump fits your engine situation. That's assuming you can find or fabricate the mount. I was lucky enough to get one of the last from Iron Pig Offroad, though I did see them later via another internet vendor. You're looking at a few hundred dollars for box, pump, lines and fittings, perhaps another few hundred if you purchase the mount. You'll need to swap the 55 pitman arm on to the mini-truck box. I've run mine in tricky situations with both 31s and 33s with absolutely no problems. My whole conversion was done in a few hours. Finding fittings to mate the mini-truck box with the Saginaw pump took more time than the rest of the install.
Spend wisely and you'll have enough money to begin saving for that five speed while enjoying a better driving Pig.
The perfect is the enemy of the good.