New CM column build

[squigglefunk]

I have a 70L stainless steel still boiler, 48" x 2.5" column with copper packing, 8" x 2.5" shotgun condenser for reflux with 6 x 1/2" tubes, a 2.5" sight glass

I have tried to read a bunch but of course still have questions lol.. I figure I want the needle valve for the reflux condenser, do I need a valve for the output condenser? Also what would be the best place for the sight glass? I see some before the reflux condenser and some after? Thanks!