Hi, i got your point first and foremost laser
results are better only for course black thick hair not for thin vellus hair plz keep that in mind
Secondly 4-8 weeks spacing between sittings can be done depending on growth of the treated hair, little delay may not affect the result
Lastly, laser hair removal
without shaving that part is not possible so its a must and as such scientifically there is no data that shaving a part makes hair thicker.
The decision is yours