Just finished this film and it definitely is deserving of the praise! I recognized the brother from Tom Cruise's recent blockbuster American Made. Excellent performances from him and all of the cast. I don't have much to add to what you had to say, just that it was thoroughly enjoyable.
A film I thought of when watching this was Tusk. That film had a similar cadence and theme, but was not nearly as good or as fun to watch. :)