I know it says dont post any spoilers but this isnt really a spoiler...

Do i get my items back after i finish the DLC? I want to know if i should hide all my stuff in my boxes before i go in. Also, does veronica lose all her armour and weapons when i go and collect her after they send her back? Because she has full power armour and a oh baby sledge hammer.

Yes you do.

And you can use the abandon bunker as house as well.