Omastar solo?

Do all of them have Att 15 especially for the eggs?

i think with that lineup, it should be able to take down Omastar with time to spare.

You should have no problem. Maybe swap in the Vileplume for one of the SeB Eggs, and leave out the Machamp. Don't dodge too much; ignore rock blast, and dodge no more than one AP or HP per attacker, only if it will allow you to get in an extra SoB.

FYI. Maybe you can try your Pokémons:

6: Venusaur CP 2168 L30 IV91 RL/SoB
1: Exeggutor CP 2528 L31.5 IV91 BS/SoB
2: Exeggutor CP 2506 L31 IV91 BS/SoB
5: Exeggutor CP 2623 L34 IV86 C/SoB
8: Machamp CP 2455 L30 IV93 C/DP
for the first 5 Pokemon lineup, you can pick extra Exegg or Vilep for the sixth one coz the first 5 should be sufficient to finish.

I tried that and won 10s before end time.

If you can't beat an Omastar with that lineup just quit the game bro.

I took down my first one using a 100% lv40 Eggs, a lv30 53% bellosom, a lv30 91% victrebell, lv30 ~70% tanglea, lv40 95% raikou, and one other junky-filler mon. Your line up looks way better than mine.