The link no longer works. Tamiya kits are VERY time consuming to put together. I spent well over 12 hours building that buggy. I can put a Monster Truck together with my eyes closed in 3-4 hours... It was very reliable but parts are hard to find here in the U.S. sometimes. So is info and support.
If that rally car is your cup of tea, then go for it. Just remember to pick a rc that is capable of driving over and thru your local terrain.