Legends or obsidian capse, Amulet and Fury Whip, Helm of Neitiz, and Whip are not replaced by the runehelm if you've done the fremmenik islands. I had a worse setup and did it at the level 85. I'm sure you can do it. If i want to do legends, dragon plateskirt and square shield
I am not able to do rfd as its too long and i would much rather train even if it gives good xp, i got way to many requirements and quests to complete before i even set foot in that dining room again. Legends cape is a nice idea since it's inexpensive to replace, and i need to do underground pass and family crest, and some other requirements.
Do you think it's worth 10K of pure Ess and 70 Attack for an weapon when your strength is 52? Haven't tried isles yet, just started getting to the yaks. Worth doing? I would like to see the combat lvl requirement was 70. Then I would be right on it and have around 80 mage by now!