Help with pokemon pearl team?

Yeah, That seems like a pretty good team. Go to Veilstone City (The mall thing at the top edge of the city) and buy Thunder, Fire Blast, Blast Burn, Discharge, Charge Beam, ThunderShock and go to Fuego Ironworks and get FlameThrower from Mr. Fuego. I beat the Elite Four and Cynthia on my, like, 20th try. I tried to do it at (all pokemon) level 49 but I got my *** kicked. I beat it eventually at (all pokemon) level 60. My team is Infernape, Floatzel, Luxray, Lucario, Staraptor and Haunter.