Hi sifus can you recommend a mini pc build that can work as a NAS and downloading machine?

Processor need to be quite good to handle transcoding in Plex media center to 2 TVs and multiple tablets and need to be able to hold at least 4 3.5" HDD.

Im a fan of Silverstone cases too especially the small form factor ones.

No monitors needed but it does need fast wifi and bluetooth if possible.

I already have the HDDs btw. Also have some DDR3 ram lying around that i can use.

Budget within 1000-2500.