Scrumble is going to have a bi-plane rig, so they may not have the standard sail area. Off the top of my head
, standard working sail area (mainsail and no 2 jib) is around 85 sq metres. Standard mast
height is 15.5m
Of course there is no right or wrong SA/displacement. I only mentioned it because you said that a smaller rig and sails
was part of the reason for your choice, when actually your rig and sail area is a little larger.
I agree it's better to have more sail area available then not to have enough. I've increased the beam of my boat, and accordingly, (with approval of the designer) I'm increasing the mast
height by 1/2 a metre, (the section comes in 16m lengths, and I figure why cut 1/2 a metre off?) and the sail area slightly, probably by around 5 m. With the increased righting moment, stability will be pretty much the same as standard.
I like the idea of a longer boat with a comparitively shorter rig. Resistance to pitchpoling is better, and bearing away when overpowered becomes a more viable option IMHO. Performance in very light stuff could suffer by comparison though, but then you can unfurl light weather
sails. One 44C I know sails at 100% plus of TWS in 5 knots with the standard working rig, and I'd be perfectly satisfied with that.
Maneouvering around (and paying for) marinas
I think we'd all like our boats to be smaller. But at sea I think a lot of us would like our boats to be longer. Waterline length takes a lot of beating, IMHO.
The 380 is a very nice boat, I know of 3 being built nearby. (Hervey bay.) Where abouts are you building yours?