Sorry I'm not able to PM anyone so I'm responding here.
It shouldn't matter much since 5wks should be enough time for the ester to saturate in your body. I'm waiting till week 9 personally but you can do wk 6. Since the ester takes time to release pinning on the same day shouldn't make much of a difference. Stick to your normal pinning and AI schedule and just take the test as early as you can in the day and follow the instructions regarding fasting etc so the rest of your numbers will be accurate like glucose. By wk 6, provided its not bunk or underdosed gear, you should be in full swing and these issues won't make a significant difference. You should have supra physiological serum test levels regardless of of you pin on that day or not. The only problem I see, especially if you remember Turkey's thread, is if your lab values come back at >1500 you won't know if its 1550 or 3000+.