There are plenty of spacers for 5xstud out there, 3mm, 5mm & 10mm are the common ones. The cheaper ones are universal fitment and are not hub centric, the dearer ones are PCD-specific and hub-centric.
You can probably get away with leaving the standard studs in place with the 3mm ones, possibly the 5mm, but 10mm spacers will need extended studs.
With anything about 5mm or so you will start to run into problems with the tyre rubbing against the wheel arches... which can be fixed with running more negative camber via adjustable camber arms. But then your car will handle differently... could go on but think I'll stop ther.
So, if you really want wider track just for looks and want to keep things real simple (& cheap), use 3mm universal spacers and keep it at that for now.
Finally, after any suspension change, you should get the geo reset.