Whilst the required network operation is achievable, it's probably worth noting that this woldn't work in the way described: an MX only advertises routes using OSPF that reside within the AutoVPN (in the direction of the DC). The switches running OSPF in the DC cannot advertise a route to the MX, in the other direction. The (more) specific route can, however be advertised into the AutoVPN by the VPN Concentrator MX, however, by adding it as a Local network 'Use VPN: Yes' under Security & SD-WAN > Configure > Site-to-site VPN. (NB: this doesn't use OSPF)
Note; in your dual-active with OSPF DC configuration, with an inter-DC link, you may need to take care to avoid routing loops by stopping your AutoVPN Hubs advertising routes to each other (Support can enable this for you). If you wish traffic to fail over from your more specific subnet, to the less specific match in the other DC, there's also some extra setup can be applied by Support to increase the number of failure scenarios handled.