When I started maemo development (2009) I used sb2, but everybody said it should not be used. Now I'm encountered several packages from debian which I can't compile because qemu on sb1 keeps crashing. (as we all know sb1 comes with modified qemu, maybe without source code, but sb2 uses systems own qemu). Sb2 could be the next best thing. I don't even remember how sb2 is set up, but I think it should be as light as possible and then just install everything from my repo.