Build for Joshua

Hi guys,

I recently got one more L!Ike, and I thought W!Breath could be quite good on Joshua. A reminder of his stats (with Audhumla, +1 merged because stupid fanboys like me merge TT units instead of foddering them off) : 41/47/36/30/33. Since I already got Ayra and other sword nukes (Siegbert, Elincia quad, Mia, Soleil, etc.), I'd like to use him as a melee tank.
He could be a ranged tank, but I think L!Ike is better for this role since Ragnell has DC built-in (and mine is already built with QR3), and normal Ike is also quite good against dagger users and archers (mine is +def with Renewal). However, Joshua has much more resistance (12 more with Audhumla). Another great competitor against Joshua is Roy, who can be very good with either DC or a breath A-skill thanks to his QR5. I want my Joshua to be different from both of them, and I can't decide on the best set to achieve that.

The cheapest build for a melee tank is Audhuma / reposition / iceberg (or his base moonbow) / close def / vantage / some ploy / QR seal. But in my opinion Roy is better than Joshua for that because he has built-in QR and thus can use a A-skill like close/distant def, S!Breath or W!Breath and close/distant def seal.

Another build that comes to mind : Audhumla / reposition / iceberg / W!Breath / QR / some ploy / close def seal. With this set, he gets 36 def and 43 res when attacked by a melee unit, and Iceberg adds 21 damage for a 2-turn CD.
A build a bit more aggressive : Audhumla / reposition / Aether / W!Breath / Wrath / some ploy / QR seal. This set is a classical dragon set (without DC...). In exchange for close def and iceberg's damage, this set allows self-healing with a powerful 4-CD wrath-boosted Aether.

Wow, I wrote a lot. But hey, I love Joshua, and never having built him causes nightmares.
Thanks for reading, and thanks in advance for your answers !

Edit : I just realised that the goal of a high-resistance melee tank is killing dragons, and Roy is better for that because his weapon is effective against dragons... Damned.

Edit2 : There is a mistake on his hero page (https://fireemblem.gamepress.gg/hero/joshua), showing his stats with his weapon doesn't add +5 res.