adding 60mm of height to the front end of that bike is probably a bad idea. Its has the potential to cause all kinds of problems.
Your bars will be 3" higher than they are now, and your HTA will be 3 degrees slacker. This will also raise your BB height, and change the way that your rear suspension preforms.
I wouldn't add more than 20mm of travel, if you don't want to impact the bikes handling characteristics.