I'd collect 100 of each bg mark, but if you're not into pvp at all do some Rep grinding while you level, or just blast through kill quests. It's one of those questions that begs for the answer "do whatever you like to do". If you hate pvp, at least do the 20 eots mark and 25k honor grind for the season 2 1hander. It's that much of an upgrade and pretty simple to get. It should be top priority for almost every single new level 70 now matter what they plan to do later.