That's a good set, especially if you hate augmenting. You can get more damage from an augmented set though for hands, legs and body. Also Apate will out perform Ramuh+1 and is for most, far cheaper. Moonshade instead of telos also, for more crit chance unless you are aiming for more STP in your ws set then that is a good choice. Perun +1 is good also, but Oneiros will provide damage at the cost of accuracy. For herc aug pieces if you choose to go that route, crit damage is far and away the most valuable stat.
With that set in the spreadsheet with pdif capped I'm getting 21.2k WS.
With this set I've posted before:
ItemSet 344919
in the same setup jishnu's is doing 24.7k though it hops to 23.4k with just oneiro's knife.
Interestingly though, Jokushu Haidate perform better than even perfect aug herc legs due to their high DEX with crit rate. They do lack any form of ranged acc or attack though so I could see them falling off if pdif isn't capped, I might start including them in my main set though as I still have a lot of augmenting to do before I'm happy with herc anyway and only using NQ atm for adhemar. Also I used path B for adhemar though for anything hard you'd want path C. I should note the bow I used in the spreadsheet was fail-not.