Hi. I'm looking for product and configuration advice for extending my main house wireless to an external, detached office building.  Currently have the Archer A10 router in main house.  Purchased the AC1750 (RE450), connected to router, and installed in detached office.  Signal is ok, but could be better.  What is recommended to "chain" extender from router.  example - Router in main house > Extender or AP at edge of main house > current 1750 in detached office.  Was considering the AC 2600 (RE650) as AP?  Or could I use an additional AC1750 (RE450)?