If you are interested in a place that isn’t focused on beaches in that area then I’ll point you to some recent answers just above where I mention the charms of Chiang Mai in northern Thailand, or Luang Prabang in Laos, and/or Siem Reap in Cambodia. All of those are wonderful places with temples and other sights, and they are quite affordable once you are there as well.
When it comes to flights over the Christmas holidays, you should book as early as possible. The airlines know they can fill every seat at a high price so they don’t have an incentive to lower fares like they do for flights in January or February. Air Asia now flies from the US to Asia and at good fares. Aside from them it’s just the major airlines as well as some Chinese airlines that do those routes.
I’m not really an expert on surf destinations and even less so on skate parks, although I am aware of many places that do have good surf beaches. From Ireland I think your two best bets would be either Rincon, Puerto Rico, which has the best surfing in the Caribbean and is good for longer rentals like that. You could get a reasonably priced flight into San Juan, which is also a really nice place with some surfing and great beaches, and then hire a car for the drive to Rincon.
Sprawled across two countries (Chile and Argentina), Patagonia is one of nature’s last frontiers. For trekking enthusiasts, adventure seekers and nature lovers alike, this remarkable landscape of snow-capped mountain peaks, imposing glaciers, gushing waterfalls, and beautiful national parks is the very definition of ‘epic’. It’s also one of the most isolated territories in the world, with roughly two people per square kilometre. Here at the end of the world, our planet is at its most wild and spectacular.
As far as finding work on the road, the only decent-paying job that is fairly easy to get that I’m aware of is teaching English, but I think those gigs tend to last at least a few months. Right now Thailand is trying to get rid of any foreigners who are working in hotels and bars without permits, so Cambodia might be better at the moment. I’m one of the thousands of people who work online while traveling, and it seems much easier to make a decent living that way compared to working in hostels and such. Good luck with whatever you decide, and maybe I’ll see you on the road at some point. -Roger
The 2nd option is a bit early in the year. The Greek Islands are cold and mostly deserted until mid April or so, and the good weather really starts in May or June. This is true in Mallorca as well. The Canary Islands are much farther south so they have acceptable beach weather almost all year, although you might get some cooler days in March as well. Even still I wouldn’t really recommend them for a younger person. In my opinion, the Canary Islands are pretty boring because the majority of visitors that time of year will be retired people from northern Europe who just want to sit in the sun. The nightlife tends to be cheesy and/or weak if you can find it at all. Let me know if you have any other questions. -Roger