Jboot MQ - making sure it goes right?

[Invurnus]

I'm nearing the coveted 5K mark for my first pair of jboots, and while that might not be a ton of money in the grand scheme of things, as a non-twink who's never done a MQ before, I'm a bit nervous. Is there anything I can do to make sure it goes smoothly? Is it safer to go with a sale that's posted on the forums rather than some random guy in EC?

Thank you for any input you can offer.