I calculate 352 grs for the shaft plus 225 up front= 577 grs.12 gr nock,10 gr cap wrap,fletch 10 grs.+.That comes up to 609 grs not including glue.
If actual draw weight is 57#'s,that's 10.68 GPP.My recurves,from my chrony,shoot 180 fps with 10 gpp.My guess is,that would be about 169 fps with a 10.68 gr arrow.
Individual chronys vary and results can be affected by type of light,light angle,batter levels,and distance between screens.I read,that mobile phone transmissions,high voltage lines nearby and a host of other things can affect accuracy.One of the biggest causes of error is the distance between screens being off.I messed that up once and my bows were showing way faster than I expected they would be.Fluorescent lighting is supposed to be very bad.
It's a great looking bow and I would think very efficient with that setup,regardless what the speed is.