Trying not to compromise too much, but maintaining a competent Master and unit, I go for Sword of power for S6 in case of protracted combats , and Shroud of Magnus for a ward save and MR2 that covers the accompanying knight unit as well (it 's bound to be targeted by everyone so MR is a must).
The rest of the plan is an 8 men knight unit with lances, full command and Banner of the Deamonslayer,
and a mounted BSB with FPA and Sword of might.
Thus on a 5 men front I pull out 4 S5 attacks at WS4, 3 S5 at WS5, and 4 S6 at WS6, and 5 S3 at WS3 (blood-dripping armoured ponies).
MR2 for the whole unit, initial CR +3 (rank, two Banners), and if outnumbering defeated enemy they auto-break him due to the Deamonslayer Banner.
I think it's an adequate hammer...