This is a new family room with 4 windows (a big tv will be between the 2 windows pictured). I picked out a tapestry fabric that will be used for color and blocking the sun occasionally. I can't decide if I should get valences and panels or just panels. Any thought? And if I hang a 96" panel over the window casing it will overhang the heat registers. Is that ok? Or should I get 84" panels to hang over the window casing that would hang above heat?