The inner cover is a wooden frame with a screen instead of a piece of wood or slats. Would you advise getting a wooden inner cover?

The frames have wired wax foundation measurinng 5.2 cm. I have read so much about mites and small cell that at my bee education level it seems to make sense to start with small cell. That would mean changing the foundation in the frames. Aside from the cost can the foundation be changed in the Reels frames without tearing the whole thing apart and is this a common sense thing to do ?

Sometimes I think that the small cell is just a fad and it really makes no difference.
I can bring a frame to the next GCBA meeting Feb 13 if that would help.
I also plan on attending the Bee Keeping Classes that start February 8th.
Thanks for any advice.
Ski