Pretty much you got yourself surrounded...
I don't know how many armies you have, but you will need to protect Kinai with at least a full stack, while one stack or two half stacks take over Ise, Mino, Owari, Mikawa, Totomi, Suruga...
As for the east either guard the mountain passes in Shinano and Kai, or defeat those stacks and take over Izu, Sagami, Musashi... I'd advise the latter as you will cut down the major recruiting area for the Hojo...
If Echigo doesn't have good roads a small garrison should be enough while you push northwards with your daimyo, otherwise either a full stack there or move to conquer Tohoku...