I swap my pads at the track and it takes me about 30-40 minutes to jack up, remove stock wheels, swap brake pads, and put on traxk wheels at all four corners with hand tools. Really easy. But i get lazy and only put my stock wheels back on when i leave. Plus dont want to wait for everything to cool down so i just leave the track pads on for an additional 1-2 weeks depending on how annoyed i get with the squeal
But for your first time, do it at home a day prior to the track day. For me, the first time took me about an hour and a half and getting dirty everywhere including my face trying to figure out where all the bolts were, how to align them properly, how to remove the clip, making SURE the calipers were bolted in place (aligning the caliper pins can get tricky the first time but you can hear the pin clicking into place when pressing in by hand first), etc.
Now its a breeze, i dont have to look behind the caliper and not even my forearms get dirty anymore
Here is a more useful link i used and from a member here: