My cheap dream. [View all]

I haven't owned a dirt bike since 1995 when I bought my first ATV. I grew up on mini's and three wheelers. I never owned a real dirtbike until I was 23. I first bought a CR125 which I soon found out wasn't the best trail riding bike in the world unless you just wanted to go fast. So I upgraded to a XR200 pretty quick. Then one riding buddy moved to NC, one got married and the Third was injured and sold his. So I ditched mine in favor of a 300 4x4.
Now I find myself wanting a new bike to ride with my son, I hadn't planed on this when we picked up him a XR70 for Christmas.
All his friends (and their dads) have had dirtbikes. (he's 8) We have three neighbors with dirtbikes and/or ATV's. We are friends with two other couples both with two boys each that have dirt bikes and land to ride on. We also live within 20 minutes of the Hatfield McCoy trail system. I've never been a fan of heavy bikes of any sort, in fact I've never been a fan of anything large (cars or trucks) so I've narrowed my choices down to a handful of 125's -150's maybe a under 250 dual purpose bike if I found one in the right price range used.
I'm on the smaller size 178lb 5'8" and don't plan on riding like I did in my 20's LOL... Only needing to keep up with 8-11yo kids I believe a smaller bike will suit my purpose.