MessyLife
The impression I have until that moment, and that the protagonist's companions, are not really specialized in anything. I think you could try training them in some specific area, they are not talented enough to be good at everything, so the most viable option and follow the style of guy or rock lee and be the master of a style, do not need to be taijutsu, can be shurikenjutsu for the kota and ninjutsu doctor for the sayuri, and just an example, have other areas like bukkijutsu, kenjutsu... So I think it is not advisable to take part in this mission now, something may happen causing the death of kota and saiyuri, although I do not care much for them, his team will be needed in the chunnin exam and until then they cannot die. Taking all this into account, the most advantageous alternative is the (e).
Option E. Reason: The team is not just one student and one teacher, there are 3 students. Despite him being the obvious favorite, they must be trained and to paraphrase an excellent comment. Why not have teammates focused on something that suits them? I recommend taking options and rolling the dice to see what they are talented at and what they will decide (Ex: Kenjutsu, Bukujutsu, MedNin)