Looks to be a good plant. My oldest example of this has about 7 pairs of leaves ,leaf span maybe 8- 9 inches, and flowered for the first time earlier this year . The flower really is enormous, and quite long lasting. I assumed, from the very dark green of the leaves of my two plants that they want low light - yours are a much brighter green, which makes me doubt that ; it seems difficult to discover what they actually get in the wild ( and I have several books about african orchids which are not a lot of use here ! ) . I have tried hanging up in good light, but the plants didn't grow at all then ; they only grow slowly where they are now on the least bright bench in my greenhouse.
An old friend had one about 2 feet high, leaf span about 2 feet, and it had a lot of flowers most years - he grew his on the floor in a greenhouse having a lot of Vandas hanging up , so providing shade, and he said drips too , but I don't wantplants on my floor - they'd get trodden on..