I like the sound of 2 for both.
In every FE game I play where I am determined to field a knight/general, I always give them the boots. They need to keep up with the rest of the team (other than mounted units).
I also like changing up the cavaliers, especially since Marcus gets to keep all of them since he is the most experienced. Gives me a bit of a Path of Radiance vibe, as I liked how all the mounted units give you options for new weapons on their promotion. Here we don;t need options, but the sheer amount of cavs in the game with very little to distinguish them always makes me not want to use any of them.
I do have a separate question that I don't think has been addressed. Are thieves getting promotion options like Assassin and Rogue? I was always disappointed they didn't have the option to promote to Assassin.