Very nice, coincidentally I’m building SNAP75 from Nullbits as well.. I would say use flux since it helps the solder adhere to the pins more easily! For the small pins you would want to employ drag soldering (i.e. put a bit of solder on the tip of the iron and drag lightly across the tiny pins).
Finally got my self sourced Mysterium to work…
cwon94 OP t1_isj6hvu wrote
Reply to comment by thelupuss1 in Finally got my self sourced Mysterium to work… by cwon94
Difficulty wise, I would say similar!