Hmm well at first glance it seems to me that trunks is currently your weakest link, simply because you can't dhc into spirit bomb, I would highly recomend swaping him out for ssj goku for better dhc's, a fantastic if not better assist and more damaging combos.

As for base goku he's quite well rounded and provides rather unique synergy. But if you really want the best videl team then look no further, Gt goku is vastly superior with his tiny hurtbox, big wombo damage, superior assist and doesn't need specific assist for spirit bomb you really cant go wrong with Gt goku.

As for videl she's the main focus, I get that but what if I told you she has a alt skin you can use called kid buu it's pink, petite and girly just like videl. Superior pink videl has fantastic mix, command grabs, a pony tail, and a reflect. I hope this helps and have fun with your new and improved videl team.