With 4x Time of Need, you can probably drop the count for Sachi and Seshiro to 2 each. This would leave you room for a 4th Kashi-Tribe Elite. You could add another Forest or a second Jugan, since he's not useless in multiples.
I'll drop Seshiro to 2 to fit in an extra Elite. I'm a bit wary, however, because I sort of want my Seshiro to stick (Much like how a lot of T2 decks max BSA).
4 Orochi Sustainer
4 Sakura-Tribe Elder
4 Sakura-Tribe Scout
4 Kashi-Tribe Elite
3 Sachi, Daughter of Seshiro
2 Seshiro the Anointed
2 Sosuke, Son of Seshiro
1 Jugan, the Rising Star
1 Myojin of Life's Web
1 Patron of the Orochi
4 Kodama's Reach
4 Time of Need
2 Sensei's Divining Top
2 Sosuke's Summons
Land: 22
21 Forest
1 Okina, Temple to the Grandfathers
I want to keep this Kamigawa constructed please! I also want to fit in another Kashi-Tribe Elite T.T