Will be hard to take it on an empty stomach of 4 hours. I eat regularly. Will try 2 hours.
Regarding timing, you will find a sweet spot that works for you. You will hopefully also find a sweet dosage that works best for you in terms of giving you the wood you need, whilst keeping headaches etc to a minimum.
50 mg an hour before a punt, and 2 hours after food is what I sarted with, and adjusted over time.