Size of lockers at Bitchu-Takahashi Station

Hello! I am planning to go from Kurashiki to Matsue in a day, with a stop at Bitchu-Matsuyama Castle on my way. I'd like to be able to leave my luggage at the station, but while I can find confirmations that there are lockers there, I can't find any indication of what sizes are available at this particular station. Are the 'standard large' lockers (117cm x 34cm x 57cm) available? If not, or if they are all in use, what are my options? I have been able to plan out most of the rest of my trip in this regard, but this leg is giving me some trouble.

Coin lockers in the station:
https://coinlocker-shiori.com/bitchutakahashi-station/

The tourist information centers can usually keep your bags as well (~500 yens).

If you can’t get a coin locker, the tourist information center states that they do in fact handle luggage storage, and on their japanese site it is also clearly stated (荷物預かり). Of course, you would need to drop off and pick up during their business hours. The TIC isn’t right in the station, but pretty close.
https://www.okayama-japan.jp/en/spot/10932