kx 85 or crf 150r

hey, I am looking at a new bike because my klx 125 does not have enought power.  I am looking at a kx85 or a crf150r.  I am 13 years old 5ft and 90lbs.  I do both track and trail and a lot of tough hillclimbs that my klx can barey makie it up.  I was just worried about getting the kx because it might not be ass good on the trails but I like how mch it wieghs so I could esily pick it up if droped thanks just wondering what would be the better choice