Imperials are my main faction and I love the Imperial Knights so I like the squad. However, if you are worried about being out activated you can throw in Ozzel to help with that. As well, depending on a single Uggie for door control might be risky.
I would recommend something like:
Emperor Roan Fel- 57
Grand Admiral Thrawn- 37
Genoharadan Assassin x2- 42
Imperial Governor Tarkin- 22
Uggie x4- 12
Admiral Ozzel- 11
Imperial Dignitary x2- 10
Mas Amedda- 8
However, I have no tourney experience and only play for fun as well I believe should always play a squad you will have fun with.