Grenadier Deadeye gear upgrade suggestions

I am curently playing a Grenadier Deadeye based on Locohol's guide.

Would love any suggestions on the items to concentrate on next.

Running T7's easily but I think I am at the stage where I need to upgrade gear for better defences, better Base stats (especially Str & Dex) so that I can better runs some of the skills and I also tend to run out of Mana quickly so I need to build in extra Mana and Mana regen.

I may also want to switch later to the Lightning Deadeye to try it out.

Currency still a bit limited at 140Ex and 20C and 3Div

I do have some of the low end Abyssal crafting items and lots of low end essences but am a total noob at crafting.

I have a Helm I bought but did not realise it was L80 till after I got it which will fit well once I get there (soon)

Item Class: Helmets
Rarity: Rare
Plague Cowl
Gladiatorial Helm
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Armour: 382 (augmented)
Evasion Rating: 340 (augmented)
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Requires: Level 80 (unmet), 63 Str, 63 Dex
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Item Level: 81
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+71 to Armour
+59 to Evasion Rating
56% increased Armour and Evasion
+154 to maximum Life
+32 to Intelligence
+33% to Fire Resistance
+33% to Cold Resistance


My character build is here
https://maxroll.gg/poe2/planner/e0cua0cn

Locohol's planner is
https://mobalytics.gg/poe-2/builds/lolcohol-grenadier-deadeye-starter?ws-ngf5-f7d82102-7e77-4a44-ad24-33b67e8ae7bf=activeVariantId%2Cd0ebe944-6320-4ea7-84ad-aa79aff0c895