You'd be better off telling us what you want, logos are easy to manipulate though colours on paint can be a little hard to change.
I was thinking Pakenham Packers with this as a logo (obviously Traralgon and Maroons will need to be replaced) in a black/orange or Green/white Unless you think the colours fit a vintage theme and the name is sort of ok..
Unless someone can think of a better team name.. Not a fan of Mustangs.
Pakenham has a lot of rural farm land so Rams or 'pacas (short for alpacas as Mero suggested) could be cool. We also had a quarry which could be a good reference for something..I like the retro feel.