Bianca, Riva was 9.6# at that age, (and she was the smallest of the litter - 8 girls) so he is a little smaller. But as you mentioned, I don't think weight really predicts much when they're that young.
RATCHX SG Wisp v Schneiden Fels BH RA NAP OJP CAA CGCA TKN TC HIC
SG Chase v Mittelwest BH
SG Flame v Nummer-Eins TKN HIC