Yeah, I think the rear lights were an option when I bought it but couldnt recall. I really like it. I wish I had done a few of the options you are doing but I can add em so not a big deal. I have the Deluxe Cab, 400CX with the cut blade, eHydro. Almost the same tractor all around. I put the block heater in the second year (very easy install), just pop a freeze plug, put it in and purge the air. Being in Colorado we do get pretty cold. I do think the battery is too small for those of us doing cold starts but I keep it on a battery tender in the winter so it stays fresh and warm. I installed the hood exhaust after my first year as well; the stock exhaust kicked up too much when I was mowing and caused the cooling stack to get clogged up. One thing you'll notice (well, maybe in the summer) is that the temp looks to be high. You will see that most folks with the 4720 see the temp gauge to be at what would look to be too hot (like at the 2 o'clock position). It seems to be normal, so dont worry about it.