First attempt claiming the baron's final region

So I'm in year 10 and have all regions but one claimed. Main settlement is at small town, but would increase if I build a few more LVL 3 homes. The other settlement is almost small town after I LVL up a few families to LVL 3.

I have 142 units with 36 being x-bows. The rest are spear and large shield. Almost all units have gambesons and helmets.

The baron still has 414 units and I lured them to my manor. I ended up killing 225/414 even with my plans backfiring a bit. I tried flanking his archers with 2 spear militias and it worked for a little, but then they ended up getting counter flanked and got surrounded on low ground.

I'm gonna try again with some modifications to the manor to make the entry point more narrow and have the flankers come from way back and follow his army in so they can have easy access to archers rather than pull infantry with them.

Just wanted to share!