I totally understand why people look to the forum for reassurance but the advice given can rock you from rose-coloured optimism to rock-bottom pessimism and, IMO, is too subjective to base life decisions on.
So, I thought I'd say this :
Be prepared financially and mentally. Be sure all adults really want to uproot themselves. Come with a positive, and can-do attitude. Keep an open mind particularly in the early days when so much can feel unfamiliar.
I think worrying is part of the game, as is looking for someone to tell you you are doing the right thing and if it helps at all I reckon a huge proportion of us came here without a reccie, without rellies or friends here, without a job and without stacks of money? We did, 'cos we thought it might be fun and it has been.
Don't know if any of that helps or if I've simply gone into waffle-mode but I'll be back at work in a couple of days so the forum will be safe again lol!
Oh and as for work, still just my opinion but..
Finding a job here can be as much down to luck and being in the right place, with the right attitude and even, by chance, talking to the right people as if you were job seeking in the UK. Some people are lucky and find something quickly and other people will try just as hard for ages and not find anything.