PT11 upgrade

Hi



I have a doubt and I don't want to do something wrong...

I'm currently with PT10.3.9 on an iMac i7 3.7gHz / OSX 10.8.5.



- Is this upgrade good for my system?



- Do I have to uninstall PT10 in order to install PT11 or simply install PT11?



- I will change my audio interface soon (say next month) so I wonder if it would better to wait until then and uninstall PT10 > install driver of new interface > install PT.



Thanks a lot!