Dimensions for old school stlye longboard for kid?

Howdy, Loong time no post. Any ideas for this type of board? My 11 year old daughter is digging old school logging ....Thank you Lord... I only ride heavy single fin Logs. I want to make her a board to get her started in the right direction. Single fin, 50/50 rails etc... Just lookong for general advice on length, thickness,Fin, etc... She is 80 lbs. Thanks in advance, Greg

80# 8 foot

20’’ wide

16’'nose

14’’ tail

round tail

best board ever

thanks dad.

…ambrose…

 

cut it out tonite 

glass it tomorrow cure all week sand and gloss friday surf it saturday morning.