Yes to all your questions. But: You would maybe need stronger power adapter if the actual will not be sufficient - need to try. You will use probably more antennas as I recommend to install dual chain radios. Even you should use whatever radios with “HnD” at the end there is not something like “covered area” as link quality depends on both sides of the link and not only on the Ap.
You have to count with the environment too.
Thanks for the reply.
I can plug it directly to AC.the case I see for this board supports only 2 antennas I believe.i need to decide what wifi cards I need to buy then see how to configure them.any advice is well received.
If you have a case with insufficient number of holes, just drill another ones. Card selection should fulfil your budget, but as I wrote, take a least HnD versions.
Thanks again for your update.
I’ll go then for the R52Hn for 2.4 and R11e-HnD or Hac for 5 GHz.
Hope this setup will be more stabil the the previous ddwrt.