Ok so things have moved on a bit. Item already purchased are as follows
FMA team Wendy repro lid.
Couple of usb powered 50mm 3d printed fans.
FMA maritime helmet cover (no idea if it will fit).
And as an early xmas gift from my wife the Xfog system.
Hopefully this will take care of the over heating and fogging problems. Now I just have to work out how to attach my mesh mask to the lid. Any tips welcome.