No ASIC is profitable in short term. ASIC´s are always for long term mining.
You are wrong it depends on the price for the ASIC miner, if OP has free electricity he can just buy old ASIC miners, old ASIC eats lots of electricity but they are lot cheaper than building a mining rig full of graphic cards, the power consumption side is why I don't buy already
How do you immediately have free electricity in mind? Also, we are not all thieves, so let's steal someone else's electricity, especially not so huge quantities.