How many clients are you connecting to the AP and what kind of traffic do you expect over the network? While we support a /24 on the MG, we have to think about client the client experience. 250 clients on a network that is providing 500Mbps (the MG can do more but the network is what determines the BW), at 2Mbps we likely aren't supporting things like streaming.. Something to consider.
If this is going outdoors and the mGig isn't a hard requirement, you could also look at the MS130r which would give you a broader temp range if this is going in some form of outdoor enclosure, if mGig is a requirement the MS130-8X/12X would be a good fit.
The CW can support link agg on the uplinks, but the MG52 does not support that on the downlinks.