yung dialysis you got:
Gyarados
Exeggutor
Starmie
Quagsire
Hariyama
Nosepass
Please do tell me if some aren't available in your game :)
UPDATE
-So i've been pllaying like crazy, and went through half of the game today xD
-Started with squirtle and got Wormeh, the Caterpie on teh second route.
-Went to the next town and found my first gym but it was closed until i beat team steam dudes.
-Beat the gym with my 28 level Wormeh :D
-Quickly went through the next route and arrived at a town, with no real important stuff.
-Next town, the grass town had a grass gym leader whose Torterra was beaten by my waaay overleveled Wormeh D:
-Fastforward to the next town with teh water gym. Gym leader's Kingdra went down the stream, knocked out by silver wind :D
-Got to the national park and finally found my second pokemon, which is Isabella the Nidoran(F), which was really great since Wormeh already was level 55 o.o
-The next town had the ghost gym who was totally owned by my Isabella the Nidoqueen that was level 35 and bit her way through the ghosts.
-Found Mt.Shuem or something like that :D and went through to find the next city which has the Ground gym leader, gym was closed though.
-Beat some Team Steam grunts at a museum, gym still closed.
My Pokemon where i left off
Wormeh Lv. 63
Moves:
Silver wind
Psybeam
Toxic
Sleep Powder
Isabella Lv. 55
Moves:
Flamethrower
Ice Beam
Body Slam
Double Kick