Young zekus bnbs are limited

Its the same medium punch hard punch combo into special moves
His standing and crouching light kick/punch should be able to link with that combo
Or even better let his light punch medium punch hard punch hard kick have a juggle effect where you could link hozanto or bushin sho

He has a lot of options actually. But optimal is usually going to be one thing.

Zeku is easily one of the hardest hitting characters for one or two bars though