Sebraasch,
Your room's floor structure is well suited to benefit from wood platforms given my experience and the experience of those above. I tend to agree with Chashas1 about the glass casters, but am also a great believer in trying things out for myself to see what works best. I would try the oak boards without brass cones (directly on the floor or connected with dots of BluTack), with brass cones and casters, and with cones plus disks. I assume you are not interested in placing the brass cones directly onto the your new hardwoods...
Your room's floor structure is well suited to benefit from wood platforms given my experience and the experience of those above. I tend to agree with Chashas1 about the glass casters, but am also a great believer in trying things out for myself to see what works best. I would try the oak boards without brass cones (directly on the floor or connected with dots of BluTack), with brass cones and casters, and with cones plus disks. I assume you are not interested in placing the brass cones directly onto the your new hardwoods...