Seriously? Do you think that you're smarter then the engineers?#1 - neither...warm. As for me, I'll change it first thing in the morning and just give it extra time to drain out...beats getting burned.
#2- No, the manufacturer probably has taken that into account. Plus, the capacity stated in the owner's manual...I find to be low...I always have to add about 1/2 quart over the stated capacity to get to the top mark on the dip stick...even sitting for a long while.
#3- what??? If it did, I don't believe its a significant amount of expansion. In fact, I find that the oil level reads a little lower after driving because some of the oil hasn't settled into the pan. Hence, many will state that you need to let the vehicle sit for several minutes before reading the oil level.
Don't get so hung up on it...it is a relative reading not an absolute. How do you know your vehicle is sitting 'perfectly level' when you check it?
My F150's engine dipstick reads 3/4 into the cross hatched area after adding the REQUIRED 6 qts. of oil. That's what my owners manual states, to add 6 qts. I don't add anymore oil to get it to the full line.
But, if it makes you sleep better at night, keep adding.