After playing Stable X for just over a week now, I managed to achieve being the first maxed account, legit. Well as far as I know off anyway. Here's an image for proof for those who don't believe me:

Right, about RuneCrafting and PK'ing.
RuneCrafting is currently bugged, therefore I am not able to train the skill. I have around 26k essence for when the skill is released, so I should be fine (;
PK'ing isn't a required skill because of the fact it just proves who is the greater PVP then your opponent. Therefore It shouldn't matter if you were going for maxed player. I mean, on RuneScape. The 1st person in the high scores isn't 1st in any mini-games. (as I know off) So PK'ing would come under those sort of category.