Best practice for adapting "Time Attack Tutorial" to multiplayer/Bots

Hi,
I’m looking for the best way to add some AI and possibly Multiplayer the Tracker Scripts. Will adding another player index to store all the personal best times and gui stuff? I am guessing that I can adapt the cast failed at begining to for each multi-player, but adding a bot is a different class so my controller references won’t work. Before I started just muddling around thought someone might have a suggestion on how to best proceed.

Thanks!