One thing I'd change is the retraction speed. The motors driving the M5 z-rods on the MakerFarm i3v printers can't do better than about 15mm/sec. The MakerFarm Marlin distribution at least to use an extruder DEFAULT_MAX_FEEDRATE of 22mm/sec, so that would have over-ruled the 30mm/sec set in the slicer anyway. 22mm/sec has still been found by multiple people to be too fast.

It looks like there was a layer shift towards the bottom of the print, or was that part of the design? Providing a link to the thingiverse source is always a good idea.