A tripod is like a good lens that will stay in your photograhpy/video arsenal for years to come (IMHO), so spending a little more now is a good investment.
The following carbon fiber tripod will set you back $250 (looks like there is a $50 rebate on all combos) and it's only 4lbs... http://www.bhphotovideo.com/c/product/549619-REG/Bogen_Manfrotto__190CX3_Carbon_Fiber_Tripod.html
-- (it's NOT the best head, but this will give you a starting point)
With a decent head you will be able to support a 8 to 9 lbs setup..
To see more package option do a search on "190Cx3" or "190CXPRO3" at http://www.bhphotovideo.com/