Well we're awesome at dominating the thread, but I NEED to get into bed ASAP, I have a Bio final first tomorrow. And Ursaring is pretty sweet, but you need some more Special. You could go... Totodile, Hoothoot, Teddiursa, Pinsir, and Drowzee/Mareep/Growlithe/Vulpix/Pikachu.
Really, getting a Hitmonchan would take a WHILE, when do you get Tyrogue, Mount Silver? No, sorry, its before that... Mt Mortar, thats still pretty far. My latest would be Nidoran after/before the third gym, probably before.