First it would be best to place this in the
mining speculation thread.
Now to your question, it depends on what you think will happen with BTC, the DIFF will keep rising; ideally not as fast as it has but the upward trend is likely to continue.
How much of a loss on electricity can you afford? If you think the price will rise again in the future you can always mine at a loss for as long as you feel comfortable and hope to reap the rewards in the future.
If you do decide selling the gear is the best option, do you think you will recoup enough of your investment to make it worthwhile to buy GPU's and switch to ALT's? Gear is now selling at a deeply reduced rate so you may not get what you think you can. GPU's are a little cheaper than they were but from what I've seen they are still not a steal by any means.
Personally I've doubled down on BTC miners in the last week to keep my hashrate up, but did build a GPU rig a few months ago because I wanted to have options to weather our current situation.
Either way Good luck.
Edit: I'm not familiar with the miner but I thought OP was discussing this
https://www.asicminervalue.com/miners/bitfury/b8From post I deleted.