Clovers like durana or yuchi aren't going to do well planted right now. You need to wait until this fall and add some more to your fall mix.

I�ve never tried lablab but cowpeas come up pretty easy if you get �em covered over with some thatch. Keep in mind that this method is really most ideally suited for planting a mix of cereal grains, clovers, and brassicas in the fall. Small seeded plant species are always going to do better than larger seeded ones.