Yeah, that is why my truck is still around, its paid for, reliable, and it will do whatever you need it to--whether that is Imogene Pass, or pulling a flatbed trailer full of hay. Mine is on 4" superlift springs, with 35s, and an automatic tranny.
Do you have specific seats in mind? If I could find some decently priced suspension seats, that would be a no brainer. With decent seats and a center console, the regular cab would be quite livable, literally. There is plenty of space, it just isn't used very efficiently.
On your cold performance issue, before you blame the IP, check the soft line from the frame rail to the lift pump on the side of the block. I had the same problem (hard starting in the cold), and found that this line (at the ripe old age of about 17 years at the time) had hardend and was letting a little air in. Even a tiny amount of air in the fuel will reek havoc on these trucks because the IP counts on the hydraulic pressure of the fuel to open the injector and maintain timing. Also check the hard line from the tank to the frame rail for the same thing. I temporarily installed a piece of clear tube from the frame rail to the lift pump so I could see if it was drawing air from further back in the fuel system, just to make sure once I discovered that this was a problem. The lift pumps in these trucks is also suspect, so if yours isn't a known good unit, they are cheap, spend the money to replace that before evaluating whether your IP has a problem. Just a couple quick tricks to hopefully save you or someone else a bundle of cash!
Brakes and steering have been trouble points for me on this truck also. I think that I am going to do a crossover install this spring. With the lift springs, I will be able to run a straight link from a dropped pitman over to a high steer arm on the passenger side. One of the few benefits of running a lift! I am hoping that solves my steering woes. I have cracked those mounting plates the same as you have, and the steering just isn't very responsive.
Anyway, I will post all that to add to the content of the thread. I live over near Montrose, so I will definitely shoot you a PM too.