Save some time and effort..
-Buy some 3Racing shocks (ebay $26 USD) The come with different pistons for adjustability and are super smooth. Way better than the more expensive Tamiya-offered units.
-Get a brushless set-up (search "enroute" on ebay or google, good setup with auto-program esc and 5200 kv motor is $98 USD.
This alone will make your car handle very well and also make it fast enough for others to envy.
If you want ballistic speeds, go for a 3s lipo next and hang on.. I have one in my car and it's so much fun!