I figured I might as well do it as many times as I could. A lot better than getting gold guns that I'm just going to throw away. Ended up repeating 7 times and have 13 tokens saved. Hopefully they will be adding 5 more custom classes (saw a hacked profile that had 15 custom class slots on Elite...)
Did the gold gun thing at 10 only had 6 guns to go then 11-15 came and that was the end of the gold gun fest did take some deaths with some of the not so well used guns but that shiny gold, will not do it again.
Yeah as soon as they said repeating 15th was put there on purpose I started. I also have all of my pistols and machine pistols within 10 kills of their next "veteran" challenge so I'll get like 160K xp just for getting a few kills with each side arm.