Hey Nybor!
I've just shown my old man your post, he's been tiling for 50 odd years and i've been 20+, and we both came to the same opinions really...
You really need to know how much you need to live on a week, do you have a family to support, mortgage etc? It's not mega money so if you need a good chunk to survive then maybe your not going to earn enough. If you were single and not up to your eyeballs in debt etc then you could get by. (these are only examples as i know nothing about your personal situation.
To be driving about in a new van with a fuel card already saves you the cost of buying and running a vehicle, and filling it up can knock a huge hole out of a weeks finances.
As Sir says paid holidays!!! That doesn't happen if you're self employed, and that too is an advantage.
I'm sure if you want too there will be oppertunities as the lads say to climb the ladder, plus if you want i'm sure there will be overtime, or if you're super keen the chance to keep some of your own jobs going at the weekend.
You'll have someone else handling all the money and job quoting, plus weekends off, sometimes being self employed if you get a weekend off, you can actually feel guilty as you are not a work and your work mind is telling you you should be working!! I tell that to my employed mates and NONE of them understand that, any of the guys here will understand that one!!
But i dunno if your self employed or not and that does give you freedom, and as the guys say, you set your wage and you earn all of it.
So it down to you, but it's a great offer considering the climate all the same..
Good luck