After reading through The donkey CRX's Insight build thread, I'm thinking of pulling the trigger on two more (small) block heaters.
I would like to grab a 250w and 100w as he did, but the 500w and 150w units look to be the most cost effective. Two 150w units is what I'm considering, as I'm concerned about the outlet I'm planning to run this all off of. In addition to the block heaters, I'll also be installing an electric heater+fan for the cabin that will come on shortly before I leave in the morning, for a grand total of 900w. One of the pads will go on the oil pan (probably - will inquire if it's safe to put a heater on the Insight's magnesium oil pan) and the other will go on the transmission.
https://www.amazon.com/s/ref=nb_sb_n...hot+pad+heater