Skid pad info is out there but is not graphically posted and you will have to dig around to find it. In general, it equates to a stone stock set up coming in around .7 with Hotchkis TVS and XV Level 1 both, depending on the reporting source, between .85 and .95 with their kits AND 17"+ wheels and tires.
IMO, the best bang for the bucks improvement is the XV Level 1 kit at $2250. Next would be the TVS at $3340, maybe a bit less if you shop around. The assumption with these numbers is that you start with a good solid baseline or you will also need to factor in the cost of replacing all suspension joints as well. Alterkation will be above these in base price as I think their base package is around $4k and the more you option it up, the higher it goes. Now, I will say that the Alterkation is a very nice set up, and I may entertain a bit of envy about it since I can't afford it, but you can, IMO build the stock set up to handle just as well and the only thing you will have to give up to the Alterk is the lighter weight.
Another one to consider if you need to start at the rebuild level and want to stick with the stock configuration is PST. They offer not only hard part rebuild kits but also stepped up t-bars, leaf springs, tubular components, and other items in verious levels of kits that can save you some money on the overall objective.
