Looking for help on a team built around a special Goodra

I have a very special Goodra that I've spent absolutely AGES getting, and I finally have it. Goodra is one of my favorite Pokemon, and I now have a perfect IV, maxed-out EV, level 100, shiny Goodra. It has a Life Orb, Sap Sipper ability, Careful nature, and its moveset is Power Whip, Outrage, Muddy Water, and Flamethrower. My question is, what is the best way to build a team around this Goodra that I've become rather attached to at this point? I'm totally new to competitive battling and have had some success, but not much. I have access to a lot of Pokemon, so I'm open to any teams people may come up with for this Goodra.

My current team:
Goodra
Braviary
Whiscash
Electivire
Delphox
Cacturne

Not the best team, but it is my Hall of Fame team. It's what I've been using in ranked matches, and I have won more than I have lost.

One more thing: I would like a Mega Pokemon to be on the team, but if not the best idea, I don't have to have one.

A mega isn't a bad idea, I would use altaria, salamence, metagross, or Diancie if you have one.
Your pokemon aren't bad, but not great. They do have good coverage at least, although a bit low on stats. Maybe switch out Cacturne for a pokemon like venusaur (hey, that could be your mega) as you don't have much Fairy coverage, and fairy is a pretty popular type.

If you're new to competitive Pokemon I would recommend that you look up some builds on smogon, you don't have to use the same build that they recommend, but it still helps since they mention threats to look out for with that Pokemon along with good Pokemon to help support that Pokemon. Team Magma is also a really good team building site I use when making a serious team. You should definitely consider a mega and/or a Steel or Fairy type to help protect Goodra.