The Studio 100 are great and would be perfect for your room but they need at least 200 Watts coming from a high quality amp to really sing. I am not sure that the Marantz would do the job to get the most from the 100's. If you like good bass, I am not sure either that the 60's would be enough for your room size. Just my 2 cents...
(I own the 100's)
(I own the 100's)