Yes it is a really good team you just about have a little bit of everything :)
electivire infernape lucario salemance floatzel metagross
I would only change him if the Floatzel was just caught, but if you have been with floatzel for a while, then keep him! I beat the Pokemon league with a level 56 empoleon, and level 49 lopunny, a level 46 staraptor, a level 38 rampardoa, a level 35 floatzel, and another Pokemon....oh yeah a level 50 dialga. so I would kepp the floatzel because of the second elete four the is a ground type.
i think so if there level is high enough you should be fine i would recommend lots of max potions and revives though ^_^
infernape or lucario because both of them are powerful or you could do with who ever's level is bigger.
personally, I had a lvl 47 luxray, infernape, floatzel, staraptor, lucario, and a lvl 57 palkia, which i got from GTS. But dialga works too.
Level up your Pokemon a bit. And try to evolve the Riolu to Lucario.
Make sure you have plenty of revives and max potions. For Aaron, fire, flying, and rock moves are effective (Infernape, Togekiss, maybe Toxicroak) For Bertha, Water, Grass, and Ice moves are effective (Floatzel, Probopass) For Flint, water, ground, and rock moves are effective (Floatzel, Probopass) For Lucian, Bug, Ghost, and dark moves are effective (Giratina) For Cynthia: Spiritomb= Infernape, Floatzel Lucario= Infernape, Probopass, Togekiss Garchomp= Floatzel, anyone with dragon moves Milotic= Grass or thunder moves Roserade= Infernape, Togekiss, maybe Toxicroak Togekiss= Probopass, rock or thunder moves. I would recommend taking out toxicroak for maybe a luxray or roserade. anyone with grass or thunder moves.
somebody out there probably has a party like that, yes
Teach your Floatzel Ice Punch to use against Cynthia's Garchomp and Surf to use against her Lucario and Gastrodon.
for spiritomb use garadon for garchomp use togekiss for roserade use infernape for milotic use raichu for lucario use lucario for less damage for gastrodon use giatina
(My opinion) Floatzel 55 & higher Palkia/Dialga 55 & higher Tortera 55 & higher Luxray 55 & higher Garchomp 55 & higher Skarmory 55 & higher
It depends on how well prepared you are. I trained my Infernape and Dialga to level 100, and still failed epicly against the elite for. Try and beat them once. It they can't, train.