Core: SS Vegito (purple), Vegito (red) and GT SS (yellow)
Bench: SS Gotenks (purple), SS3 Goku (purple) and Super Vegeta (yellow). Alternate bench you could swap out Super Vegeta for Raditz ex (blue). It’s a more defensive option.
Your best core option is a sort of Fusion Warrior/Super Saiyan team to take advantage of your Super Vegito. You don’t have any of the bench so it’s sort of a Super Saiyan/Saiyan bench. SS Broly is a stronger unit than GT SS Vegeta, but it’s better to have color diversity and GT Vegeta is still a strong unit with good debuffs. Team is a little awkward, but I think it should still function pretty well.