IMO, yes.
There’re two minor differences of the proposed plan and what you have described:
- There’s no a de jure DAO on stages 2 and 3, since the only representation of it is two multisig wallet. We don’t want to complicate it with additional logic of voting / syncing of two networks. Remember: participants of the security committee should send updating transactions on both networks!
- On the stage 4, the DAO is equal to the consensus rules of NEAR – this is the ultimate goal of making the bridge fully decentralised in its entirety.