I now have Coronation Ace blades and will be moving up to Pattern 99. Minn. No need to worry yourself about making the transition from one blade to the next. Going from Coronation Ace to Pattern 99 is almost always a natural transition. I've never known any skaters to have problems with these two blades. The average transition time is usually a couple of hours of practice time on the ice.
Most problems come from breaking in both new boots and blades at the same time.
Be sure you have them sharpened by an experienced skate technician. I'm doing a project on the career of figure skating coaching. The fit of the boot should be very snug around the heel and ankle area with very little space between the instep and the side of the boot. This will help reduce the risk of injury to not only the foot, but the knees and hips as well. The arch of the foot should be firmly secured in the boot so it isn't moving or rubbing against the inside of the boot.