I recognized Kadena before and maybe it was hot back in time but I don't know about now since it's been a long time that I haven't seen this coin or being talked about in the forum while as for Bitcoincash, the coin was pumping recently though I doubt if it will last a long time as many are saying that it was only being manipulated.

Your suggestion of mining Bitcoin is still going to be the best option but but, that is you have a real passion about mining since it wasn't easy and it isn't cheap. There were lots of stuffs to be considered first like location, space, weather conditions in the area and so on.. before one can effectively make Bitcoin mining a somewhat profitable activity.