I've started a campaign as the Mori, and at the moment can only build 60 man units. I'm sure that it's possible to build and amalgamate 120 man units.

When can I start doing this ?

also do you pay less for a small unit size, I'm paying 300 for a 60 man No-Dachi unit, would the cost be the same for the full size unit ?

also what is the effect of a reduction in the honour of your Daimo, I've heard that attacking an ally will have this affect, but that doesn't seem to deter the AI ?