I think it’s fine to start with a trim router and then move up if/when you feel the need.
Another consideration is that you may want to consider an 80mm spindle as an option — we have one in development, but no idea on when it will be released, so waiting until you know if that’s something you’d want or no might warrant consideration.
Spindle advantages:
- quieter
- less runout
- more torque
Trim router:
- less expensive
- simpler
Note though that if you don’t get a BitRunner (which would eat into the cost advantage) you’ll have to turn the trim router on/off manually.
See: