Whirlybird.
Good on you for doing what you want, sounds like you have it worked out. Of course I should have read your profile before banging on about what you do etc! Off the top of your head do you know if its a requirement to have an IR for each machine youre type rated on? If that is the case we are in the realms of being wealthy enough not to work for a living...especially busing hairy oilriggers around the N sea.
. ."thats some catch,that catch 22"