The term of the lease is irrelevant.

Slatwall panels & dividers sound "movable" as you can take it with you when you leave.

Area rug.... as you can roll it up & walk out the door with it?

Signage... that you could also take with you upon lease end, probably, unless it specifies the exact location?  

Legal - for drafting the lease?

And pay attention to what @BobKamman mentions too