Well... the food you got isn't going to last forever so you shouldn't stay in the lab. Cherrygrove's to the west, but it's a three day trip. There's also the ferry to the Kanto region if you want to go there.

[ Hmm. Anything else he should add? Oh, yeah, there's one thing. ]

I think your classmates are all in Johto, though, if you want to meet up with them.