06 Tundra Suspension Upgrade Need Help

Hello everyone, this is my first post on this site and I figured this would be the best place to try and get the answers that I am looking for.
I have read some other posts and got a bit of information but not quite what I am looking for.
I just bought a 06 Tundra Access Cab Yamaha Edition about 2 months ago with no current upgrades. I live in British Columbia Canada in the Kootenays where we have lots of mountains and rough terrain. I will be using the truck for hunting and moderate offroading. I at first thought of just putting a leveling kit in the truck before going on a good trail ride and realized I would like to get better performance out of the truck offroad.
I spent some time researching online and found a site called offroadwarehouse, they offer a fox coilover kit with uca and rear shocks with remote resi's http://www.offroadwarehouse.com/products/sfID1/4/sfID2/78/sfID3/83/productID/50897 . I also looked to see what Camburg and King offered for my truck to just bolt on and fox seems to offer the best choice. The fox's were the only ones I could find for my truck to directly bolt on with remote resi's. The kings only gave me 2 inches of leveling in the front and do not require uca's. The camburgs i found give me 3 inches of adjustment, require uca's but do not have remote resi's and the site gives me the option to purchase a few different rear shocks.
So my questions to you guys is:
1) Will this kit make much of a difference
2) Do i need remote resi's for what im doing
4) Does anyone have experience with this stuff and can they tell me a thing or two about it.

Im new to all this stuff and need help to fiqure out where to spend my hard earned coin and get a nice ride out of my truck.

Thanks guys

 

Any of the bolt in coilovers should have an upper arm if you want it to have any caster at ride height. ADS shocks offer a bolt in coilover with remote resi as well. It's who I use to go with my upper arms.