I've finally thought seriously about motocross after watching for a long time and need some advice for a first bike. I'm 21 years old 6ft 80kg quite strong (a lot of gym work). The bike would be used for woods and trails rather than racing. I'm very mechanically minded and spending time on the bike wouldn't be an issue.Price would be an issue, would look to buy relatively cheap second hand and I've always liked kawasaki's,was told a 4 stroke would be better than a 2 stroke for what I would use it for. Thoughts and opinions please!