Runescape: What skill should I work on next?

So I am watching my guy chop ivy at the Varrock Palace an now he is only 40k away from level 99 woodcutting. By the time you read this he will more than likely be level 99. Anyway, this is my first level 99 and I want the cape to be trimmed, but I understand that you need a second level 99. Which level do you recommend I do? My friend got fletching in one week, but he botted it. What skill should I do to get to 99. I have 75 attack, 70 strength, and 75 defense. So if I should get one of my combat skills to 99, tell me.