The word "Acute" isn't a keyword category. Senses are either vague, precise, or imprecise. None of these feats upgrade scent above imprecise, which means you've largely sunk a bunch of feats into redundant things covered by your background. Generally you can assume nothing stacks unless the effect specifically says so. Your low-light being upgraded to dark vision specifically says so, and scent does not. So open and shut case.
Instinctive Strike works fine-- letting you ignore flat checks to target hidden or concealed for strikes. Supernatural Senses does so little once you have Instinctive Strike I'm surprised one isn't a prerequisite for the other. It just lets you lower the flat checks when you target enemies for anything other than strikes. Athletics action like grapple being the easiest example. You could also argue only the flavor text mentions smelling the enemy so it applies even if you can't RAW, but that feels like a stretch by RAI.
Nocturnal Senses gives you a longer range on your scent, which is pretty niche since it only applies while raging. (Ie it won't warn you if someone is sneaking up outside of combat.) The Acute Sense feat does nothing for you.
I would ditch every class feat but instinctive strike if I were you. One of the cool things about scent is some GMs will let you sniff enemies within 15 feet of a door. They might even let you try and identify the creature with a Recall Knowledge check with a hard or very hard adjustment. Sadly you don't get that with the raging sense feats only applying in combat. It is much better to get scent which is always on through a background, or better yet a heritage or ancestry feat. Feral Child costing you an ability boost is expensive. Some build concepts might not be able to spare stuff from the ancestry side but there are very few ancestry abilities worth giving up multiple class feats for.