I've had a troublesome time installing and configuring Qt. I read about it all over the internet including the Qt documentation but can't seem to get it just right. I've read several posts about this same problem but the answer for those has not worked for me. I'm a unix guy trying to work on a PC and find it contrary.

I'm thinking my installation of the various requirements is to blame for the Kit not being able to auto-detect my compiler(s) and debugger. In Options > Build & Run, only the MSVC compilers are auto detected. I manually added the g++ from cygwin and the MinGW tools but am using the MinGW compiler and debugger in the manual kit I made.
I read somewhere that the MinGW tools are the ones to use but that it is also required to have the Windows SDK installed.

I followed the order-of-installation on the Qt documentation about Windows Requirements in the SDKs and Compilers section after having installed Qt 5 and MinGW-64:
Windows SDK 7.1 with Visual Studio 2010
-- Visual Studio 2010
-- Windows SDK 7.1
-- Visual Studio 2010 SP1
-- Visual C++ 2010 SP1 Compiler Update for the Windows SDK 7.1

Here are more details:
Windows 7, 64 bit, w/ 8GB RAM
Qt 5.5.0 (MSVC 2013, 32 bit), Qt Creator 3.4.2 built Jun 29 2015 from revision b57ac109a2
-- this looks very clearly at odds with the instructions to be sure to only install Visual Studio 2010
compiler: C:\MinGW_64\mingw32\bin\g++.exe
-- plus 3 compilers from MS SDK 7.1 are auto detected - MSVC)
debugger: C:\MinGW_64\mingw32\bin\gdb.exe
Versions qmake: C:\my_TOOLS\QT\5.5\winrt_x64\bin\qmake.exe
-- the Versions tab says "No compiler can produce code for this Qt version. Please define one or more compilers."

I've verified the versions of all the various requirements and, from all the many posts I've read, it seems these are the right versions to play together nicely but apparently not. Something is clearly wrong and I just can't figure out what exactly to do to fix it. I wonder if it is now so balled up that I need to uninstall the whole shebang and start again from scratch.

Should I, despite instructions to the contrary, install Windows SDK with Visual Studio 2013? Will that give me MSVC 2013?
Can someone offer any suggestions on how to get this Qt just working?

Thanks for anything.