Except for "API-MS-Win-Core-.dll", the WinXP has its own version of those dlls in system32. by including them from Win7 the conflict will happen. and i’m sure the API-MS-Win-Core-.dll files won’t be needed on XP.
But to make sure i will setup a fresh virtual WinXP machine to see how my app will run there. Also i’ll test it on Win8.1 too.