There game isn't out to test. But SBS has said that Lag would most likely play a big part in playing the game.
I recommend to go for a server with the fastest ping.. Of course you don't need to pick a server at this moment unless you really want a specific community.
My advice is to actually test out what server works best for you in the alpha/betas.
Happy to answer any more questions in Discord as there's an APAC one. (Link here: https://discord.gg/012JHuBASVs1H2N8A )
Of course as always with the shameless plug, my Kingdom's discord; https://discord.gg/XHP2hyv