AMD: A4-4000 / A8-6600K + GA-F2A85X-D3H / FM2-A85XA-G65 + 1 or 2 AOC-SAS2LP-MV8
Intel: Pentium G3220 / Core i3-4130 + B85 Pro4 / Z87 Extreme4 + 1 or 2 AOC-SAS2LP-MV8
Cases with built-in how-swap bays are: RSV-L4411 (12 bays), RPC-4216 (16 bays), RPC-4220 (20 bays), RPC-4224 (24 bays). Of course you can attach a hot-swap 5-in-3 cage (e.g. iStarUSA BPN-DE350SS) to any case with three consecutive 5.25" bays.