My first DNP cycle was with crystal however this was at a time when there wasn't much info on crystal DNP. The 4 days on/4 off might work however DNP's half-life is 36 hours so you can pretty much calculate how much DNP is left in your body after a cycle. At 4 days on he should be taking more time off between cycles, otherwise DNP will still be present in his body when starting the next cycle. I'd recommend something like 7 on/ 10 off, depending on the dosage. Very wise of your friend to start at 200mg/day. Crystal wasn't that much different for me, it just hit me faster- I felt it within 12 hours of my first dose with a sore throat and headache.
The supps look good however I'd add some flax oil and a multivitamin/mineral. The cals look good at 10x bodyweight but I'd change the ratio. I'm going 40/40/20 for my cycle however the more I read about it I might up the carbs for myself, maybe 45/35/20. Two gallons of water is good but drink as much as you can! Up to 3-4 gallons/day is what I shoot for while on- drinking more water in the morning to make up for nighttime. Not only is it ESSENTIAL to keep hydrated it also keeps your stomach full, and while taking a piss every 15-20 minutes is somewhat impractical it keeps your mind off of your uncomfortableness. BTW don't forget glycerine, it really does help keep you hydrated.
If I was taking 200mg/day I wouldn't take it right before bed. It might make for a very uncomfortable night, especially while trying to get some sleep. I'd take it first thing in the morning along with thermogenics which will help stave off the carb cravings towards midday. Also, don't take on an empty stomach unless you want to take the risk of what feels like bad acid-reflux.
Also have benadryl on hand for any allergic reaction you might encounter. There is another way to handle allergic reaction and it is posted on a recent thread about DNP by Huck.
Tell your friend good luck and to remember he will get something out of the suffering.
Somehow it feels I've left out alot and those are pretty basic principles- Andy13, Macro, Huck, and Fonz can answer any DNP questions you have with clarity.
Although I have a feeling you've already run a search, specifically look for a thread that lists the half-life formula for DNP. That is invaluable info for planning a DNP cycle.