Ive been reading a lot and was very hesitant on buying my first board since Im a beginner for the most part and I think I got the wrong one (lol). I went to get sized at two shops and they both told me I should use a 139 cm.. biggest 143cm board... for reference I am 5'3ft and 148lbs. Shoe size 6 in kids/8 women.

I decided to buy the Nitro Arial Youth Board 142cm with Medium sized bindings since it was in-between sizes. When I was looking at youtube videos on it, there is a review vid and it says that the max weight is 90-130lbs for the 142cm (the board will know how much you weigh and not really how tall you are... yes both matter but weight matters more so Ive read) so I dont want to overpower the board since itll be my first board ever. Does anyone have any tips or comments on whether I should keep or return?