I had about 65 hours in C152s when I started flying a PA28-140, and found it no problem. There was more difference in the handling due to size than wing position. There is more ground effect on landing though, meaning you tend to float a bit more... but that doesn't take long to get round. In total I spent an hour on circuits, and an hour on upper air work before I was signed off, but I wasn't really happy until I had another hour on circuits. If this is your first 'new' type after having learned you'll find it slightly strange with a new cockpit layout, but I'm sure you'll have no problems. Good luck
