Replying to Big enough for xl saga?

hey guys
so i had xl saga pants in beaver fur that i bought on here

i used them for about a month
then i sold them thinking that they were too big and i ordered the blue large pants from saga direct
now right now im 5,8   145 pounds   14 years old
im about to jump up in height (this summer)

i want the suit to last me 2-3 years
should i send back my blue pants to saga and get xl?
its still under 30 days

also
if i get the xl pants should i get the xl jacket to go with it? (im not asking if it looks good im asking about sizes)


thanks guys give me ur input
i like baggyy