yes, the single speed will work. i would go for the proline velocity 40s, dace 23mm hubs, and crime fighter tires. also, 4 shocks can handle it. it just takes heavy duty springs. i used trinitys.
i would try these springs:
http://www2.towerhobbies.com/cgi-bin...?&I=LXHWJ7&P=7
run these tires:
http://www.rc-monster.com/proddetail...PRO1122&cat=42
these rims:
http://www.rc-monster.com/proddetail...2678-02&cat=42
and these hubs:
http://www.rc-monster.com/proddetail...03223BK&cat=42