What mizuno clubs should i get?

im going to get new clubs soon but i dont want to way overpay but still have decent clubbs im 13 and have been hitting my older brothers old MP-12s. Ive been trying to decide between MP-53s and the JPX-800s ive been deciding between these twos and they both have their pros and cons also if i get JPX-800 would it be worth it to pay the extra 100 bucks and buy the pro clubs or just save 100 and get the original.....my handicap is about 15 and im 5-3inches tall .........also i havent hit any of these clubs yet so i want to get to rodger dunn and hit themm............sooooo yeahhhh idk anytin else i can tell you....oh yeah one more thing a week ago i did this contest where you guess the carry distance of your driver and i guess 230 and got 231 soo i got a prize and i got a 1 out of 50 chance for a bag ysis and i have the coupon but when should i get a bag ysis(a bag ysis is when i swing in front of a computer and he tell me the swing speed my ball speed the spin of my ball and things like that for every single club in my bag....lucky huh haha) sooo yeahh im just wondering when to get that(right before or after i get new clubs) soooooooyeah haha can you pleas just answer these questiong SORRY ITS SO FREAKIN LONG