You should really try get in Prif. Yes it's a pain in the asshole, with a few boring quests, but just get your brain out of your head, lay it somewhere in your room, and start getting those requirements (75 in 8 skills, I think it was, it's not that hard, c'mon). Do those horrible boring quests, just look for some YouTube playthrougs, and hoppa, a world full of autoclickable/clickrecording skills will open for you.
Just a few skills I'm currently botting or have botted since I'm in Prif;
* Firemaking, this is literally the most easy skill there is, there is a gigantic bonfire, with a bank beside it. I mousrecord this, but I'm sure, if you put your RS3 interface in some good spots, you could autoclick this. Although I recommend a clickrecorder, I recently got banned when autoclicking Mining, while with a mouserecorder, you can put random intervals in your scripts.
* Mining, easy XP, no banking needed. > Smithing can be done with the stackable ores you get from this, so that's 2 skills in one.
* Crafting & Construction, there are harps which are AFK, so autoclickable/recordable. Slow Construction XP though, but the Crafting XP is very good.
And then the basic skills which can be done at a bank. Herblore, Magic, etc.
There are enough choises man, really, don't waste your time looking at a screen and lowering your IQ every hour you play.
Cheers.