Hi,
It may be worth contacting the airline you are travelling with and asking about pre-booking extra weight or cargo. I would assume you are on Onur or FTC (because it is February) and to be honest don't know if they can do it, but it's worth a phone call.
DHL are supposed to be OK, having said that when I had something delivered here from the UK they passed it to a local delivery company and it was never seen again.