But I want to try and mine another coin/token-maybe Digibyte or another Scrypt one in hash-to-coins.
Many Antminer L3+ were sold in the last few months, so I saw difficulty almost double. You can try multipool.us if you want to try a multi coin pool that will switch automatically for you. Even if you have 6 MLDs, I don't think you'll recoup your investment ever, especially with cost of electricity. Do it for fun and leave it at that.
I think you're probably right. I could have bought more LTC than I will earn with the MLDs over the next decade for the same price. But really that isn't the entire point. I am interested in understanding mining, so its just like another hobby. But at the same time, trying to mine a much cheaper coin (like DGB) may turn out favourable if it increases in value.
Thus my second question: How do I split, say 3 miners to mine LTC in litecoinpool and then another 3 miners to mine Digibyte in multipool or hash-to-coins? I am not a big expert. Basically this exercise was the first time I have started using sudo commands ever. So if you know how to divide the miners up, pls ELI5.
Using raspi3, Linux access through a mac.