Dude...seriously...word of advice, don't chase your losses. Just write them off and move on.
I know it's tempting to do anything you can, like give money to Butterscamlabs and buy even more miners, but it's also tempting to spin the roulette wheel just one more time in a casino.
Don't tip in to your retirement or do anything else you wrote in your post. Keep your current coins, even buy more, and just sit on them.
I recommend the same, just put your coins safe, maybe they will be worth a lot in the future. But don't risk too much on mining, there is a lot that can go wrong.