You will be looking at around 100-150$ for Radio/Servo/ESC/Motor.
Novak Makes some REALLY high quality ESC's. Orion makes some really nice motors.. Tend to stick with the 'Bigger' names as they're the more proven brands and 9 out of 10 times they work alot better too.
Expect to pay around 35-65 dollars for a decant ESC, 20-45$ for a decent Motor. And in the ball park of 60-100 for a decent radio.. I recommend a JR Xr2i which is 99 dollars and comes with 2 servos and a receiver stock. I don't know what you ultimate budget is.
Basically the ending price is going to fluxuate determined by your 'needs' should I say..
How fast do you wants to go? Want to go so fast its nothing but a blur going past you? or just want something thats quick enough to impress your friends? It's all up to you.
http://www2.towerhobbies.com/cgi-bin...?&I=LXMVP4&P=0
there is the kit I presume you want right? It looks as if it comes with a motor, albeit a really slow, and cheap motor but it will work.
now I'm going to list some possible speed control/Motor combonations.
First up, DTX Intellispeed:
http://www2.towerhobbies.com/cgi-bin...?&I=LXGZX1&P=0
Its good till 18t, (around the turn of most stock motors)
next,
http://www2.towerhobbies.com/cgi-bin...?&I=LXKSB1&P=0
Novak GTS Pro, your better choice.. It's good till 12t and with 12t you will really be haullin ass then.
On tower I don't see very many good options but those two, I would go with the novak but like I said, your budget decides everything.
Here's a REALLY good deal, no motor limit (run any motor you please, 8t-40t and everywhere in between.
http://www.hobbypeople.net/gallery/158188.asp
Now onto the motors:
http://www2.towerhobbies.com/cgi-bin...?&I=LXJAJ7&P=0
http://www2.towerhobbies.com/cgi-bin...?&I=LXJAH8&P=0
http://www2.towerhobbies.com/cgi-bin...?&I=LXPRF6&P=0
http://www2.towerhobbies.com/cgi-bin...?&I=LXFSX8&P=0
Theres lots more too, just look around..
But, lower the turns= less torque but more rpm, more RPM = faster but less torque = not much punch off the line.
Here are some good radios, since you're going electric you only need 1 servo.. (don't beleive tamiya, electrics only take 1 servo, they say you need 2)
http://www2.towerhobbies.com/cgi-bin...I=LXCFW2**&P=0
Good radio, I use it on my Nitro RS4, never given me a problem.
http://www2.towerhobbies.com/cgi-bin...I=LXENN3**&P=0
Another good radio, I tend to stay away from futaba (personal preference)
http://www2.towerhobbies.com/cgi-bin...I=LXDEL3**&P=0
and prolly the best cheap choice, can't go wrong with a Hitec.