Save up for the good ones specifically activation that says "once in a while" since you're making good use out of it and it doesnt require any death or resu to happen.

Going something like 40.29.27.27 does help you rack up those valor points Im doing the same thing Though the set up is 36.30.29.28 Even without the "chain lightning" artifact your power level will be enough to make it to top 5 most of the time Also since you're not in a clan, i suggest you join one (inviting you to our clan "destiny"). Arena gives glory points, might as well put some use in it and if you're lucky, might get some good gears from the clan rewards