I've also taken a shot at a 'true' infinite build and the following is the best I can come up with. (No Duelist or Crow required!)
- Dragoon (Fractured:Prospector/Aspire/Mirroring x2)
- Dragoon (Fractured:Prospector/Aspire/Mirroring x2)
- Obelisk
- Reaper (Adaptive)
- Familiar (Adaptive)
- Ranger (Fractured:Dragoon/Aspire/Charging x2)
Two free slots at your choice.
Artificer can be used to enhance Reaper and Dragoon further, but it's not mandatory.
In practice it will look like this: