I'm 90% with Irish Flyer but one thing strikes me immediately: at 23 you're pretty young, you could easily wait another 2 or 3 years if personal + financial circumstances would allow and still be at a very good entrance age. The reason I say this is from an engineering + aviation point of view you've just been offered what sounds like a golden opportunity. There may be a seriously sexy engineering project + experience in that offer. This could provide those extremely important first 2 - 3 years of experience on your CV that will be worth their weight in gold if you every want to or have to return to engineering.
Me, well I'm too old to wait around any longer and will be hot on Irish Flyer's heels later this year. I have 15 years of R'n'D engineering experience and just one or two years of hiring engineers too. I find experience is in the bank forever.
Of course with a PPL under your belt, you could go barmy waiting around regardless of age!