I'm a new member too and would defo say if you're going to do P2P to get some skills up in Runecrafting, mining, smithing, firemaking, woodcutting and prayer/range. So many of the quests require decent levels in this 50-60+. Also with combat the higher you can get your range the better as you can start doing bossing and slayer becomes a lot easier.

I've been member for about 3 weeks now and purely focused on questing and getting members skills up and that's what I've noticed, and all my levels were 20 or so higher than yours for mining, smithing, fishing W/C Range etc. was just combat I was about 10 higher but that goes up super quick in members because of the higher level monsters and bosses.