Hello,
I would suggest corrections at about 6% up or down, so you would end up with these prices:
54 --> 51
173 --> 183
And just a suggestion, regarding seats distribution, you could have more LT (around 12,5% of total seats), CS (around 2,5% of total seats) and LB (around 0,15% of total seats).
LT around 1.900, CS around 380, and LB around 20, would improve your income (but don't forget to adjust prices if you upgrade).
Best regards.