Oh there is a deadline in place for this? that changes a few things.
Well I understand meeting deadlines but if possible I would suggest putting more more frames for the main characters animations and maybe the np characters only having 3 frame walks if you have to cut down a bit. The player will be spending most of their time with the MC so the amount of effort that goes into boss characters and Main character should be a lot greater then a town npc.
Just a thought. I agree while its quicker to do shorter key frame animations smooth moves are always pleasing to the eye.