This all depends if you are driving a car/using a local guide or driver, but for East slope, I'd plan something like this:
- Quito to Mindo via Zuro Loma and Yanacocha Reserves, both are in similar elevation but they give different target species. Night in Mindo
- Day in Paz de las Aves and Tandayapa Valley
- Day in Amagusa Reserve and Guayabillas Road
- Day in Rio Silanche and Milpe Bird Sanctuary
With 4 days, you have the minimum time you can spend and see around 300 species from lowlands all the way up to high montane forest and some Choco endemics. If you have more time, then add two more days for these:
- Day in Bellavista Cloud Forest Lodge and nearby area (you can pay a small day trip fee and see many cloud forest species that don't go down as easily to Tandayapa)
- Day in Recinto 23 de Junio (Long-wattled Umbrellabird) and Via a Las Cascadas (better chance to get good views of many species that you might get small glimpses of elsewhere if your luck is bad such as the Toucans)
- Morning in Punto Ornitologico Mindo (Sunbittern and White-throated Crake) and departure
If you go 7 days, I wouldn't be surprised if you left the Mindo area with somewhere between 350-400 species and many of them don't carry over to the Amazonian side, so you can still get 100-200 new species there too.