The MilkV Duo features a RISC-V processor and supports up to 256MB of RAM. I currently have a physical unit but have not conducted tests yet.
Show us pictures? So we can see if its going to fit
This is an interesting board for a few reasons. The first is the camera which could add a fun element to the picocalc. The second is the placement of the microsd slot. It appears to be set in a way that it could theoretically take and SDIO WiFi module (assuming one exists) while allowing for continued use of the standard SD card slot for storage. That would allow for a clean WiFi add on without having something stick out the side.