On your mark, get set, go!
You now have about 30 days to get your glory, otherwise the difficulty increment will outrun your Terraminer IV, and the electricity costs will exceed what profit it can produce with it’s now measly but once massive 2000GH/sec.
Even if you run your Terraminer IV from a 3kW biofuel genset, and you made the biofuel from free waste, you might be able to double your time, but right now with a 15c/kW price and 5999 price tage, the Terraminer IV will break even at around 21-31 days, profit for about 110-120 days, and then it actually starts losing money after about 6 years.