Sorry, it looks like a dumb strategy. Burst will completely own your Plank who doesn't even consider getting a Mallet somewhere and there isn't a Starks, Shroud or Aegis anywhere. I also highly doubt that your healer team can get all those items that you put down before being completely decimated.
Against a DECENT enemy team it doesn't matter if you can protect your towers with 5x Fortify, Fortify tower ASPD doesn't stack and doesn't contribute too much in defence against a late game push
tl;dr. It's dumb.