Yes, it is possible mix different media-based building kits on a layout. In fact, it can add a lot of visual interest...
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N Gauge Pack (x40) of Spoked Wheels
N Gauge Pack (x40) of 3 Hole Disc Wheels
N Gauge Pack (x8) of 3 Hole Disc Wheels
Coach Bogie Pins (Solid Type) (x10)
Coach Bogie Pins (Split Type) (x10)
LNER Thompson Coach Bogies (x2)
GWR Hawksworth Coach Bogies (x2)