Pillars of Eternity - Worth getting White March?

Hi folks! Picked up Pillars of Eternity and am planning to play through it on my Steam Deck during a recovery period in hospital. This is my first CRPG style game, and I am pretty new when it comes to fantasy settings as I have typically been more into Sci-Fi and shooters.

Is the White March DLC worth getting? Or should I play the base game and then if I actually really enjoy the game, add the DLC into the mix at the end game? I am seeing some conflicting reports.

I have already spent my meager budget in the Steam sale (surgery has wiped my savings) so I am wondering if I stretch to grab this. I see PoE 2 is also on a deep discount, but I think I will have to wait for that one.