Should I use stiffer shocks on the front of my Wagoneer?

Unless you bye coil over shocks,(shocks include springs over the shocks) they won`t be any stiffer. shocks have dampening and rebound, when you hit a bump the shock will go in easy, and come out slow for a smoother ride. Unless you you are putting a plow on the front, that would require stiffer springs. Stay with the stock option for the best ride. I hope this will help answer your question.

Shocks wont really balance out the engine weight, that would be springs.

To compensate for the weight difference on bumps front shocks usually are different than rear ones though.

I don't really have a yes or no answer for you, but I suggest you buy yourself a set of "Monroe Sensa-Tracs" for that Jeep. I've used top end shocks from KYB and Gabriel before, but those Monroe SensaTracs put them all to shame. This was on an 87 Jeep Cherokee too. I've used them on my Civics and my Nissan Z too.

No. If you want a stiffer front you need better springs, not shocks. You are better off improving the sway bar, that will take care of it.

Stiffer shocks give you better wear on tires etc, but you sacrifice a bit on ride comfort. So just depends on what you want/ need.