Option C
Start low. 150/150mcg total. 1 dose a day. No calories 3 hours prior/2 hours after.
I've experimented with pinning first thing a.m. and last thing before bed. Try both and see which one you prefer. There are pros and cons to each, best method is whichever one works best for you.
I'd start with a.m. first week or two if possible just to see how stimulating it is/get your body used to it. See how that goes. You can then switch over to nighttime for a couple weeks and see how that goes. Then pick a method you like.
I am not a fan of 5/2 cycles. Every day your peptide exists reconstituted, it loses potency. No reason to ever have it sitting around unused. Run that bottle dry.
2 days is nowhere near enough time to reset receptors/prevent desensitization/prevent antibody buildup regardless. You need a minimum of 30 days for that.
Run your cycle 30 - 90 days on/30 days off



