well since I have done all those things only a few times
I am gonna say 10 hours if this is your first time doing the
brakes, HID's and others on the list.
Brakes: 2 hours
HIDS: 1.5 hours
Aiming: 5-10 minutes
fog light bulb replacement If no HID conversion: 10 minutes
wires and plugs: 1/2 hour if you have no brackets in your way... 1 hour if you still have a tonne of brackets to wrestle with in the back.
Coil replacement: 20 minutes
oil change: 1 hour
reseal headers: Front 1/2 hour rear 1/2hour so 1 hour total
these are estimated times if you have not done these before. Also I am accounting for break time and doggin time. I say 10 hours should be plenty since this estimate is sittin at about 6 hours.