I would concentrate on a single coin in your place so as not to waste resources. Otherwise you have a little bit of everything, from my point of view that is not optimal
It's better to do a definite job with confidence, I think what you do is a good alternative than holding a lot and we don't know how to continue is better one token and we know and for sure.
OP should minimize the number of mining altcoins amount.. Here some of altcoins name I heard first time in my life, or some could become scam.