Yes, another rate my team

[quilava flame]

Here's my team. I'm trying to beat the E4 right now. So please help.

Sceptile
lv 46
hp 133
atk 92
def 79
sp atk 114
sp def 86
speed 131
cut
earhtquake
leaf blade
slam

Sharpedo
lv 41
hp 120
atk 108
def 51
sp atk 95
sp def 50
speed 91
dive
waterfall
surf
take down

Flygon
lv 45
hp 145
atk 109
def 77
sp atk 86
sp def 89
speed 107
dragon claw
fly
strength
crunch

Groundon
hp 157
atk 157
def 145
sp atk 108
sp def 82
speed 104
Bulk up
slash
earthquake
fire blast

Aggron
hp 123
atk 103
def 168
sp atk 63
sp def 68
speed 78
water pulse
thunder
iron tail
take down

Exploud
hp 150
atk 100
def 70
sp atk 81
sp def 60
speed 71
hyper beam
ice beam
secret power
rock smash

[quilava flame]

I really need help. I can't beat them no matter what.