Converting into endgame from fubguns LA

All in on eva is certainly a choice

I don't know the current prices of things, but looks to me like the best thing you could do right now is get a crit bow and convert your tree accordingly. I'm sure fubgun has a crit version.

Look for a bow with at least +3% crit and as much dps as you can afford. Don't worry about the Gemini base, it's not important enough to justify DPS loss.

New boots that are not armor based. New uncorrupted amulet that you can anoint.

Missing interlude buff for max health. And your ES/Life is crazy, crazy low from what I would expect for a level 89 character.

If you’re doing T15s with ranging success, you could hit Trial of Chaos and sell Fates for ~30 div to make up the gaps.

I played a version of the fubgun build. Your boots are evasion armour and your gloves evasion energy shield, you should focus on evasion or energy shield, my advice is boots and helmet energyshield only( as high as you can afford)

Also your bow quiver and damage on rings are all over the place, focus on physical damage and chaos damage. Poison arrow scales with both chaos and physical. Check the tags on your skills to build accordingly

Your ring has lightning %damage, try get a chaos one. Also anoint your amulet with lasting trauma.

As for your quiver, get the crit chance base . As your already a high level , you should focus on crit now

Here's mine. It's a poisonburst pathfinder, not LA Deadeye, but I'm linking it so you can see the difference in defenses. I've got 2k ES compared to your 670. Even doubling your ES to 1300 would make a huge difference in your survivability. My gear is far from perfect as well.

Ditch the boots, they're Armour/Eva hybrid. Either get ES/EVA hybrid or even better full ES. Get a full ES helm with 400+ ES. If that is too expensive then get as much as you can, and pick up Subterfuge Mask passive node. Right now my helm with this passive node is giving me 455 ES + 910 EVA (right now you get 116es/289eva).

I see you going for crit chance and crit damage nodes. You're getting a lot less out of those than you would if you had a bow with base crit on it. To be fair, those can be expensive. But until you get that bow (even 3% makes a big difference, moves base crit from 5 to 8), it's worth reconsidering what you're doing with your passives. Also note that Fubgun prioritizes movement speed when it comes to passives. MS is nice, but you also need to be alive to make use of it. I'm not gonna say MS is bad, it's great of course, but keep in mind the opportunity cost. As a deadeye it could be worth getting some reduced movement speed penalty while attacking. This will be more noticeably for your speed in maps as you are attacking at least half the time, and being able to move faster while attacking will help you stay alive.

Rings and amulet could be better as well. The % increased lightning damage isn't as good as it might sound, flat damage is better. You've got two wasted prefixes with accuracy and evasion on the rings, these could be flat damage or life instead. The only good thing on the amulet is +3 proj. Which is good, but the other rolls are ass and you have no anoint.

Another small thing for survivability, I go with a life flask that gives me instant recovery. Whether that is the mod that gives half of the amount instant or the full amount instant. Better for spamming when you're in danger. Switch your act 4 quest reward from bonus to mana flask to life flask. You are also missing 5% increased life from the interludes (unless poe ninja is lying but it looks like it has all the other quest rewards).

You are not running wind dancer which is a shock to me. Also Ghost Dance.