Hello, I have a 3 unit eero pro, 2 of the 3 units are wired in, I have a few dead spots (deck/outside)  I can't do much else in terms of physical placement of existing units , was wondering what the consensus is on buying 1-2 1st gen units vs. beacons to augment coverage (no wiring in those locations)  - the theory being is that very few devices would connect to those nodes in the normal course of events.

thanks