I like your stuff! Great vocals and the mix has a lot of transparency, very cool! I wouldn't add too much reverb actually as there is already a lot of space. Vocals could be a bit thicker (maybe some doubling very light in the background) and those sampling noises a bit back. Overall very well done 
You should be proud of that composition and production, a well crafted song.
great compo indeed ,great horns 
Vocal Reverb is a subtle subject, and mostly a matter of taste , My own searches on vox led me to plate verbs mostly, and I use an old eventide plugin with a long dark plate.
You'll also get great results with the KPA verbs and delays, I use this signal chain : SM7B , ART vocal preamp, KPA, spdif, SC, DAW , post fx. Be sure to use a 'flat' profile by deactivating amp& cab.
My fav verb on the kpa is actually a delay ( quad to verb) , you can also try to stack with a verb ( long hall in my case )
Awesome! The only thing I know about Reverb is you can quickly add too much. So add too much first and then back it down, but not down to it disappearing. 
Sounds great. With regards reverb it’s very much per track, I tend to overuse verb but you really only want it on certain points where you want to give the feeling of space, such as on the repeated “make this happen” when the backing has dropped out a little. Otherwise for your master to create a transparent verb you can try a general smooth reverb but turn it on to fully wet and adjust the eq to rid yourself of wolf notes, then mix back in as much or little as you want.
Which samples are loud?
...those deeper percussion noises - whatever it is in the quieter parts at the beginning and in the end again. To me that one stands in front of the whole mix, i.e. too much in my face
