R. Bangkok Sunset -- light requirements?

[rbarata]

But what is bright indirect light, in foot candles?

Honestly, I don't know. Do you grow Catts? Most of them have the same requirement.

Do orchids store up light in summer that helps them get through a low light winter?

I don't think it works like that, at least to your orchid. Light is an important/essential factor in the production process of energy which is partially consumed and the rest is stored, usually in pbulbs. As this hybrid doesn't have pbulbs (I think), I really don't know how it stores its energy.
Let the experts talk...