As long as you have documentation to back up your choices here then you're fine.
Jan 1 as the acquired date and 100% business use since acquired is perfect.
The basis at the end of it's prior rental life in 2008 as the basis to begin depreciating is also perfect.
Answer all of the questions as though you had purchased the property brand new for the 2008 basis on Jan 1, 2023.
Disregard anything about it's prior rental life. You already took the depreciation for that and you're not trying to get away with saying you didn't. You're doing everything right.
@midas
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