100% agree with frank. ive never liked 125 build, frosties and dual sojs all day.
i even liked the jawn style libby with insight part on one side and dual spirits on the other. 70 fcr from those, 10 from ammy, and then u can rock w/e armor you want depending on matchup.
gives you an option to drop frosties for mages, grab vmagi and hit 125, or the option to drop vmagi if u dont need res/mdr and pick up sshroud for cbf, lifer armor for more dmg, or even peace.
but no shame if u want viper in all setups, its a great armor vs pretty much anything.