Get rid of the eggre, since the extra def of the domi is better.
If you already have a ray katana, then there is no real point in also carrying a doku.
The void blade has some situational uses in which it is really good (mostly rushing sews, ddocks and maybe also ffa tombs), but 95% of the time you won’t need it, so if you want an extra inventory space you can keep it in your vault.
The waki of eastern winds is really, really overrated and you might even feed it. While it looks pretty good on paper, the shots are so spread out that usually only 2 of the five shots hit, while a t5/t6 waki usually gets 3 in, which results in much more damage. The extra expose also won’t matter because with lvl 89 mheal, you should be able to permaexpose with t6 waki and with maxed att, expose only increases your dps by 6%.
TL;DR: Keep the Masamume, Ray Katana, t6 and ronins waki, domi and exa hp