Woooow, I just saw your latest pics ... You know I used to like your old setups, they just look stunning ...but this now is jaw dropping . Congrats. to you for the new set-up , and the sub looks grand ...
One thing...as previously suggested , you ought to get a good 2ch amp now . those fronts will flourish if used as stereo set up . Probably the way to do it is as I have done - via a high quality switch . This way you feed the floorstanders through the Receiver ( using them as 7.1 surround ) and the stereo amp ( using them as 2ch stereo ) . Then you don`t need another pair of fronts and you are using the best of both worlds by only switching via the switch , which in your case should be something of a really high quality . I am using Beresford ( british make ) which is less than £ 100 and works a threat for my Mezzo 6`s , but they are much lower quality speakers than your-ones , so you should be probably considering something even better..... Hope that helps