I have two of the 741's on order (maybe, no BTC address either), but actually see 3 orders   (kept refreshing, so maybe 6 total).

Given my high electric rate, if Bitcoin drops to 3750 my breakeven becomes 1 year.
So I probably need to host these somewhere.

Since I have only done GPU's (these are my first ASIC's), should I mine at home first to understand them?

Also:  how much network traffic do these use?  The GPU's are minimal

And yes, assuming 0 increase in difficulty, too late at night to figure out what affect a rise in difficulty would have on the breakeven with a declining BTC value.