How do you get the most out of 1350 RP?

i know many will get upset at not getting rp and im sorry if you do.

Hello everyone, i hope you all had a good day. i would like to ask how to get the most out of 10$ of RP. now previously i was really foolish with the last time i got 1350 RP (birthday gift) by spending it on a ward skin and chests (never doing that again). now, generally, people consider that as a low amount, as you can only get 1 or 2 decent champions or 1 expensive champion or skin.now, if i dont get any advice i plan on to get 3 champions, 2 worth 6300 IP and 1 4800 IP.

Now, how do i get that? well, as you all know there are 4 champions on sale every week (at 50% off). this makes things like 487RP. that times 2 is around 990RP. after that you can either get an 3150IP (champ the reason why i mentioned 4800IP because i had 80 rp carry over) or a skin and a cheap champion. as a person who is NOW confused at what i should play, im pretty much leaving anything open. i want to support but that role is popular in bronze (i do not play support for free elo, i can actually carry with ) these are the champs im leaving out.

TOP: MID: JG (i suck at this role): ADC: SUP: (NOTE: some of these champions can play other lanes)

what should i get, im asking for financial advice, champion choice advice and overall advice if you have read this far have some ardent censor have a good day! [slayer-jinx-wink] btw sorry this was accidently put in the wrong category, im new!