So after some testing moving the platform, we concluded that the wheels are too big for our platform. We weren’t able to move the platform quite easily and turning was a nightmare, so we went searching for a new set of wheels and that resulted in these wheels( see picture below).
These so called ‘ Breaking and locking casters’ are ideal for our platform, because of numerous points. First they are much smaller in size, hence the platform is much easier to guide. Second these wheels can be locked, not only the backward and forward movement but also the rotational movement. At last these wheels look much cooler on the platform :).