G0RSQ

If the cams are locked with their timing marks facing each other, and engine WAS on its timing mark, then in that position it is not possible for the pistons to hit the valves, so no damage should occure.

I am sure you can not easily remove the head with the belt covers still in place. The rear one is a right pain to get off normally!

Personally I would not remove the head untill the crank pulley is off, otherwise ther is a risk of turning crank when undoing, and potentially dislodging the liners.

Spend your time taking the starter motor off, and releasing the offside engine mount, and changing the water pump...and any other jobs you can think off..