You will be stuck with PSY-Q linking format being incompatible. The whole toolchain is entirely based on custom builds of GCC, which also include customized object and library formats. Unless you can convert them to whatever GCC uses these days (was it ELF?), you cannot use a more recent build of GCC.

Ideally you should use a VRAM 2 VRAM copy function to construct whole paragraph
and then create 1 sprite and place it in the framebuffer. That's how MGS does it for subtitles and Codec screen.
Bad solution and not ideal. You end up eating RAM and VRAM more than you need. Allocate a VRAM page for ...