Thorsten, I booted using your initramfs:
A non-modular kernel would be an asset Finn, as I booted but am unable to mount the root device from within the initramfs (passed by kernel flags, UUID actually) and upon further exlporation, there is not an IDE driver that I can find (which makes sense, as as Thorsten mentioned these are build by debian for the host system. It actually does load a SCSI driver).
Finn, if you don't mind, could we work together on making a non-modular kernel for 68k mac? I was planning on compiling a kernel myself for the experience, but that experience has been limited so far; I'd like to help-learn. If all goes well I'd also like to put a guide out with the attached working files that I used for others (specifically 630 users) who need to do this as well, as I have spent way too long reading through ten year old how-to's and wouldn't wish that upon the next guy.