Epson Moverio BT-35E or BT-300 with BT-35E HDMI Box?

I already have the DJI Smart Controller and I have the Epson Moverio BT-35E smart glasses on order. I was planning to connect the interface for the glasses to the SC via fast USB-C.

However I have just seen that the BT-35E interface box is available to buy separately. This would enable me to connect a pair of BT-300s - which are foldable - unlike the 35Es
So I’m wondering if I should cancel my order for the BT-35E glasses and buy the interface box and a used pair of BT-300s off ebay? It would work out about the same price as the BT-35Es + be more portable. (The 35Es don’t fold like the BT-300s do)
Also would the resolution and lag be the same?