Hi Mike,
Sounds lke a good plan. My raspberries and strawberries absolutly love woodchips, and so do my winecaps (king stropharia). I think they have the potential to make for a nice guild.
Not so sure about adding oysters to the mix. I grow them on logs, but never tried to do them "in the ground". Winecaps are relatively easy to establish and produce in abundance. Seeing as you are limited in terms of woodchips, I woud recommend establishing the winecaps first so they dominate the new beds and are not in direct competition with other varieties. Can you do the oysters on logs, perhaps?
I have no experience with nameko or enokitake, so I won't comment on those.
Interested to hear back on how it all works out for you - cheers!