I know it sounds crazy, but I almost think you need to spend a good chunk of your budget on making the movie look like it cost more than it actually did. I'm talking $2k+ or so just on that one scene that WOWs people. Explosions, guns a blazing/shootout or a boat chase or helicopter chase or something that people see and go THIS IS A MOVIE. Or how did you do that/get that in your movie? Sort of thing.
I watch a movie like Monsters and the VFX were what really did it on that one. When you got army tanks driving down the road in your movie, or something big, I think it sets you apart. Maybe people then trust you a little more, I don't know what it is, but they are more likely to stick around to the end of the movie once you give them a solid Hollywood type scene. Just a random thought.
There's no real right or wrong. Some people will do it the way of Gareth Edwards, some will do it the way of Lena Dunham. Both did pretty well (regardless of who writes them off as flukes). I personally wouldn't go into any venture if it wasn't going to at least attempt to look bigger than its own shoes. That's just me.
Obviously, the Duplass brothers started off with less than I have and still walked pretty far.
Choose YOUR way of working, if it happens to agree with someone else's then cool.
I dunno where to fit Avery and Pete, in ways it's recycled and in others it's sort of "new". I dunno, but my peace of mind comes from knowing that we at least tried to make it feel like a larger movie than it really is.