I go to Mammoth at least once a year or more for last couple years...it's all right but if I can choose, I'd rather go to Utah or Colorado for snowboarding. The only reason I go to Mammoth is 'cause I live in Southern Cal., and I can drive there.
The gears cost quite a lot...if you do not have any or borrow from anyone you know. It's kinda hard to borrow from someone 'cause your height and weight will affect the length of the board( for instance I am 5'4'' and 110lbs and I ride 157, but I ride it a little long......if the plate is longer than it should be, you have more speed but is hard to control...I used to ride 154), plus the gears can get damaged.....
Plate 300~800
Binding 250~450
Boots 150~350 (I recommend BOA system, if you are a beginner....sitting on the snow to tie the laces can be a pain, just go click click click w/ the BOA system)
Jacket+Pants 250~600 + Inner wear (you can wear anything that you have like a warm hoodie)
Goggles 150
Gloves 70 (get a good one that fits your hands well)
Beanies around 20~40 (they are pretty affordable....
)
All together, you can actually afford a LV. You can rent all those above, plate, binding are fine....but the idea of wearing boots, jacket and pants that other people have does not please me much personally.
I have been snowboarding for last 10 years. I ski too, but to me snowboarding is by far the best and funnest sport.
There is no LV in Mammoth though...hehe...enjoy snowboarding there and then go to South Coast Plaza for shopping since your BF lives in LA.
If you have any other questions, let me know.
Spring break is a good time to go to Mammoth.
Have fun w/ your BF and BE CAREFUL when you snowboard.