I don't like the mid length style boards for a wing board in breaking ocean waves, it seems like it's not much to choose from for a pure wakeboard, most brands focus on mid length / parawing boards. Any recommendation for a pure wing wave board? think a bit pointy nose, around 23 wide and max 5.4 long and under 5kg around 75 - 85 l, maybe a bit narrow tail or is it just to go custom for a pure wing wave board ? Any recommendations? I should say the it's always plenty of wind (3m-3.5m wing) when the waves are on so no need for long narrow board to get up on foil.

A 70 litres KT Drifter 5 Pro Carbon is pretty close to what you are describing. Give it a try and see if you can find anything that you don't like.

ktfoiling.com/boards/drifter-5-pro-carbon/