Sista - if you want 100% of hairs gone, you’ll eventually need electrolysis even if you start with laser because laser only works on coarse hair. Once that hair is removed and finer hair remains, you’ll need to finish with electrolysis.
Laser first makes sense if the majority of the hair on the area you’re looking to treat is coarse and dense. It requires less treatments overall to achieve a good reduction on all the coarse hair than electrolysis would, and often cheaper. But once again, you need to realize that laser won’t remove 100% of the hair.