Also another hack i have to reduce time on my total brew day, is filling the kettles the night before, turning the system on and bringing the HLT and Strike water in the MT up to around 185 degrees. Then i turn it off before i head to bed. When i wake up the next morning, i've lost heat, but im well over 100 degrees and my heating time before starting my brew day is cut in at least half. Takes me 10 minutes to fill the kettles, throw in potassium metabisulfite, and walk away until its bed time. I'll do my water treatments the next day right before mashing in.
A lot of controllers have a delay start timer built in to them. The Blichmann Brewcommander can delay start up for up to 24 hours. Any controller with the Auber EZboil DSPR-3xx brains can do it also.
The super cheap way to do it is to get an appliance grade timer that can handle 15 amps and just have it come on an hour before brew time.
Hundreds of people also buy my drop in HotRod heat sticks to cut their heat times in half.
If you are happy with your heating times, that's great. A lot of people ask me what I would build and I have to be honest that once you brew on 240v, you will never want to go back. If you haven't, you don't know what you're missing so no problem there.