Cool Jamo... Like those brackets... and great to see someone put some decent sized wheels on a mobile.
A few MFT style dogs would make it just a day lighter which portability would benefit from... and would give greater clamping options, especially towards the middle.
While 3/4" dog holes seem to be the Yankee standard... they are a tad tight for the 3/4" clamp (Irwin etc...) shaft for hold downs... the 20mm gives that 1mm wiggle room that makes a world of difference.
If your first cut is too short... Take the second cut from the longer end... LBD