At 16th level some form of flight should be expected, probably by item on this character. Boots of speed and gloves of dueling are some basic combat items outside the big six which you'll want. Chakrams are marginally better weapons than javelins.
Dampen presence lets you use stealth against enemies with blindsense/sight, which seems likely to be more common at this level. If you're just not into stealth then maybe slow reactions could be useful, or offensive defense if you're using the original (non-unchained) rogue.
Half Orc 7th level 2 Handed Fighter (Nodachi for weapon) & 9 levels of Scout/Skulking-Slayer Rogue. Sacred Tattoo of course.
I've been away from Pathfinder for a bit and don't know if there are any other feat choices that would compliment this build.
I say rethink why you're going Str-based. Unchained Rogue is compatible with all of the Chained Rogue archetypes so unless your GM banned unchained there's not much reason to not take it. If you then spend a feat on Advanced Weapon Training: Fighter's Finesse you'd be able to use the UnRogue's Finesse Training to apply Dex to both attack and damage with your Nodachi. Which is increased by 1.5x for two-handing as usual.
You'd have pretty much the exact same damage, but your Initiative, Touch AC, Reflex and most of your skills gets a huge bonus.
I'd also not bother with the Two-Handed fighter archetype. It's a negligible amount of extra damage not worth what you're giving up.