I have pokemon colloseum and have completed it and have got through everythimg..

haha completed colloseum and both Ruby/Sapphire and fire red, you sound more like the expert here hahaha... lets see now...

typhlosion: keep flame thrower and sunny day, but replace the rest with a thunder punch and either dig/earthquake for those SP.DEF crazy pokemon
blaziken: overheat is very bad as you know already, choose between blazekick/flamethrower as your fire move and replace the other one with aeriel ace, also teach bulk up to make blaziken that much more efficient
feraligator: no arguments here
wartortle: (wtf is fluffy tale?) Evolve it and replace hydro pump with hydro cannon from the lady you learned Frenzy Plant off, Blastoise is the only one out of the three that can use the elemental hyper beam without gettin slaughtered.
jolteon: are you sure lightballs work on jolteon? i thot it onli worked on pikachus... anyway hyper beam is a BAD idea, you should know that, replace it with anything, thunder wave is nice, better yet, Trade in pin missile/hyper beam in for an agility/baton pass... its advantages speaks for itself.
venusaur: replace razor leaf with magical leaf through breeding, and get rid of earthquake for sludge bomb, and get rid of frenzy plant for sleep powder for your new venusaur =D

Ho-Oh: obviously get another item, you're wasting the item slot. get rid of solar beam for thunderbolt, and maybe calm mind for flamethrower so you could make the most out of those 5 sacred fire

good effort, but lousy movesets, its a poor attempt to balance, concentrate on each pokemon's strengths to give them their movesets, and start looking at what role each pokemon play rather than just what type they are, it's a potent team but used the wrong way, this team is 4/10, 1 point below average, =S it's a very nice job raising them this strong though, keep going and maybe post a new team after you've finished training them (in the forums ofcuz, not here)

Frank

Perfect team but raise them all to level 100.
black hawk