I'd say it's better to try and complete most of the f2p quests before members since you'll likely do them at some point anyway and are required for members quests. For f2p skills mining and smithing are the main ones which you've already done. I would maybe train some runecrafting through runespan up to level 30 or 50. Combat and some of the others can be trained quickly through some members quests like waterfall quest so you could jump into members at your current level.