Replying to Salomon gun, is that an ok ski?

hey

i've got an offer to buy a salomon gun from new, pretty cheap, so i was wondering if its a good ski.

I am gonna use it for BC primary, but a lot of time in the park too as it would be my only ski except my race skis. So is it fat and stiff enough for powder, and is it not too heavy in the park?

My weight is around 68 kg and my height is 171 cm so would a 174 cm ski be the right choice for me?

Oh and what other skis could fit my demands?