BTC's mining difficulty is high for someone who's just thinking that it's easy to mine it. Competing with large mining companies would just give you an headache so I don't think it's worth it for you to mine bitcoin nowadays if you have that small mining facility. ETH's difficulty is also high but I'd prefer to mine it through GPU's and what you will do is to mine and hold. If you will calculate your daily mining earnings, you will just be discouraged.