Yes, that is better than the ledge, but may still be too far from the window. Light intensity drops off rapidly with every foot of distance from the window. For your low light Peace Lily and Pothos, no more than about 8 feet from the window.
If budget is a problem, you may be able to get some free discarded plastic nursery pots at a local greenhouse, nursery or garden center. Interior landscape companies are also a potential source.
