THE 150 WILL BE TOO SMALL FOR YOU. SOUNDS LIKE YOU NEED TO BE ON A 250. I´M 5´5 AND THE 150 IS PERFECT FOR ME. IT´S A TRAIL BIKE AND HAS ALOT OF LOW END.I RACE THE 150F IN HARE SCRAMBLES AND IT DOES VERY WELL OFF THE LINE AND WHEN I NEED THE SPEED. REMEBER THOUGH IT IS A TRAIL BIKE.MAYBE IF YOU WANT A 150 TRY THE EXPERT 150R