Right, I put myself into a stressful situation, but should be fine now... ha ha.
I thought (Because lack of communication from bungie about this hasnt been great), that the CE items were going to be a seperate dlc at first, however on monday I saw that there was only a bundle for the CE items with TTK, and I already pre ordered and paid for TTK seperately, which pushed me to try and cancel that pre order.
Put that through, and then today now, I see that there is indeed a seperate dlc just for the CE items...urgh, so I rang up and cancelled the pre order cancellation... I may have saved £5 if I just got the bundle the first time, but didn't want to risk losing the pre order content and it may take a while to even get it removed from my account and get the refund.