[Blind-sysadmins] Surveying a wireless network

Hi all, I'm planning to upgrade my networks at the office and at home to equipment that also supports 5 ghz. I would like to measure the signal strength and network quality on various locations in the building to assess if additional access points will be needed or to see the impact of various channels and channel bandwidth settings. Does anyone know some accessible tools to do so? I would prefer something Windows based, but suggestions for Linux programs are welcome as well. My networks are built with Mikrotik gear and the new equipment will most likely be from Mikrotik aswell. So, if these devices have useful tools to asses network quality, I'm glad to hear about that as well. Best, Bram