I got referenced!
Do not buy a chip off ebay and plug it in, this will **** your motor in the long run. The best option for you would be to speak to Mike at Dynachip, £225 for the map, its done to your preference and his work is excellent. However if you are towing as well I would suggest a larger intercooler as well. Rumour has it the new Britpart performance intercoolers are made by Alisport just slightly smaller, and slightly less WC but FAR cheaper. I've had one fitted for the past 200miles with no issues at all.
In regard to EGT temps for the most part you should be fine, the biggest issue is warping the manifold but its unlikely unless your pushing it really hard for a long time. TD5s run cool as standard.