5'11 180, 156 or 158?

I spend most of my time in the park, but I need a board that performs well all over the mountain.

Tech Specs:

Shape:

twin 

Flex:

medium (5 of 10 on Forum scale) 

Camber:

hybrid (Doubledog) 

Effective Edge:

[148 cm ] 1122 mm; [152 cm ] 1162 mm; [154 cm ] 1178 mm; [156 cm ] 1194 mm; [158 cm ] 1214 mm 

Waist Width:

[148 cm ] 244 mm; [152 cm ] 246 mm; [154 cm ] 248 mm; [156 cm ] 249 mm; [158 cm ] 250 mm 

Sidecut Radius:

[148 cm ] 7320 mm; [152 cm ] 7570 mm; [154 cm ] 7690 mm; [156 cm ] 7790 mm; [158 cm ] 7910 mm 

Stance Width:

[148 cm] 22 in; [152 cm] 22 in; [154 cm] 22.5 in; [156 cm] 22.5 in; [158 cm] 22.5 in 

Stance Setback:

0 in 

Core:

aspen blend 

Base:

sintered 

Recommended Rider Weight:

[148 cm] 95 - 165 lb; [152 cm] 115 - 190 lb; [154 cm] 140 - 200 lb; [156 cm] 140 - 200 lb; [158 cm] 155 - 210+ lb 

Recommended Use:

freestyle 

Manufacturer Warranty:

2 year