Re-installing and installing my Native Instruments software

I got done uninstalling one of my Native Instrument programs on a laptop that someone was going to buy from me but then changed there mind. The dilemma that I run into now is that I plan on getting a desktop for my main DAW setup, a laptop for live use and another laptop as a backup (unless I use the one I was going to sell as my backup). So that is a total of 3 installations and activations... 4 if I include the one I had to uninstall. So is this going to be possible? EW, are you still around?