If you buy nice spacers you shouldn't have to worry about anything
It's just more of a hassle worrying about something that holds on your tire failing
But if you want some get nothing but SpiderTrax IMO
Probably the best company for spacers, although more expensive you wouldn't need to worry about anything going wrong really
Of course it's always best to just get wheels with the right backspace, but if you definitely don't want to consider that then spacers are the way to go
Also I hope you've pounded the pinch weld over and if not then you'll have to when you get spacers