Ok, I want to order 2 of them when you have them assembled let me know. Thanks.
Are P50 B1 pogo pins suitable?
Yeah, I’m pretty sure those are the ones we all use (at least myself, Lexel, HarlyQuin, etc).
Yes, that are exactly the ones I use and Lexel had the same spacing between the pins, back then. So unless he did not change that, the P50 B1 should be good to go.
https://www.amazon.com/gp/product/B019FGHZBG/
I bought both of these. I believe they were identical for the most part. I built mine with HQ’s key though. Thanks HarleyQuin 
- just make sure you choose the thin board when you order from OshPark (2 oz copper, 0.8mm thickness)