I just started the hair removal journey. Laser is always a good start. It is quick, covers a large area in a single session and is pretty permanent. The disadvantage of Laser is that it needs dark hair on light skin to work.
Everything Laser cannot do would be Electrolysis where individuals get removed one by one.
I do have a mix of black and white/grey hair. I am however somewhat lucky and the roots of a lot of the grey hair still have some color.
So I do a few sessions Laser first, and everything not done will be electrolysis.
I went to a higher end place. I know I pay a bit more money but she has a lot of experience, especially with trans patients.
Usually you can find Laser treatments on Groupon too.
I would recommend an initial consultation to get a sense what is possible and how long it will take. Then you can decide how to go from there.