I can't decide on a team

I'm currently using Clawitzer, Aegislash, and Hawlucha. I can't decide on the last 3.
I have a Timid Alakazam and a Timid Gengar, so maybe I will use both of them cos they're rad as shit, but I can't decide on the last slot.
I want to use a Chandelure because its my favourite Pokemon but then I have FOUR Special Sweepers.
Maybe I should have a Wall.. Or use Chandelure as some kind of Substitute+Will O Wisp fucker.
How is Goodra as a wall? Or maybe even MegaVenusaur

Also I just realised how many cool Ghost Types there are. Maybe I should also train a Ghost Monoteam