Hey gonadoit
I have owned, surfed and flat-water paddled:
Avanti
10'8 Cabrianah (10'8 Fusion before JP merged)
9'10 Allwave
I was 129 k when I started on the Avanti... 120 k on the others ...(97 now... thanks to SUP

)
Avanti surfed incredibly well... even in well OH, for such a huge board. I loved it...
BUT... it is dangerous! I was hit sooo many times, because I couldn't get clear of it... too long.
I 10'8 was ok in surf and flat-water... but you can't get near the nose... too much belly under the nose
The 9'10 Allwave will be AS stable as the 10'8... but surf much looser and noseride well. Really nice in flat-water as well. Super strong build.
I think the 9'10 Allwave will suit you very well... plus smallest of the 3... so easier on your back