Balance is the way to go. Either go full heavy knight or sergeant. Drop the leotaur, gaia and the inspirations. Add another statue and cover it with a feint plan. You could also go for another orb, or a few half shuts.
You could also experiment with labyrinth of nightmare for your clowns.
Well, yes, but in my expirience it's a 50-50 chance to win:
You use statues to control Fire King Avatar Yaksha, don´t kill it.
If the opponent use Fire King Island to special summon and you manage to kill the Sacred Phoenix it will be a gap, he will special summon it from grave but he will go back because the effect of destroying Fire King Island, you need to exploit it.
is the deck still viable to reach kog in the current meta?
I'd go 3 clowns and 3 guardians. -1 tragedy -1 desert -1 transporter and replace them with more versatile cards like half shut, econ, or SRH. I personally run 3 SRH in my clown/guardian deck. Card is OP