Yes I still mine. Profits are down but you are still making a profit. You could 100% make use of the electricity. Right now depending on what card you have you save around 1$ a day per card if it is free power.

I recommend you read my guide linked at the top. You don't need to target sia just auto convert to btc and buy SIA it's so cheap right now and not worth mining. I dunno where you saw that miner for 1btc but most are free or have a small 1% fee as you mine.