I'd like to arrive at the same time that it's possible to move in.
I want to arrive when it's possible to move in.
■キーワード
入居する = move in
①I'd like to arrive at the same time that it's possible to move in.
→入居が可能なタイミングでそこに着きたいです。
②I want to arrive when it's possible to move in.
→入居が可能になってから行きたい(着きたい)です。