So lets rule out some obvious ones first -
Black pill - no way that sounds like way too much work
Purple and Orange pill - I have these around the house, no need to get more
Brown pill - kind of already my life anyway

With that said, I would ask for both the red pill and the pink pill. I already have a special consideration with the SHL for whenever I get a penalty to instead be allowed to go to the bathroom (thanks eggy for being so understanding). So all this really means is now I'm zipping around at super speed and my game gets elevated to the next level, though maybe with more penalties since any time I run into someone it'll look like I charged them. But that's more poop time so I'm cool with it.

Also the fame of a korean pop star sounds great and I imagine there are a few that aren't that talented anyway so I'd fit in nicely I imagine. Assuming the fame also comes with some of the money they would be making too? Money's tight.