I own a new First 31.7 in Hong Kong and have been sailing a lot for 3 months now (already put nearly 600 miles..and week-end sailing only
!). Maybe the first impressions would help :
She is a very sweet, easy and fast, but as the guys say, mostly coastal racing and cruising orientated. Being brand new (and Beneteau not being X-Yachts or Hallberg-Rassy), I have already had a few incidents with some cheap-designed-cheap-built items, which you may want to check before you head to the big blue (secure the batteries, keep an eyes on the blocks at the bottom of the mast, check the stanchion bolts, etc...). There are also many things you should do before you go offshore. Simple details like a plastic door to close the cabin while sailing under pourring rain (much better than the heavy wooden door!), a belt at the chart table, nets at the open storage spaces, etc.. This being said, and once all these details fixed (which will take another few months) I would certainly feel confident to go offshore with her, say Hong Kong to Philippines or Indonesia. The problem would be bellow deck. 40 liter tank of diesel is ridiculous so you will need lots of gerrycan stocked on deck. 160 liters of fresh water is not enough for a long haul crossing. The fridge is very small, and the 2 commodity batteries won't be enough to keep it cool long enough, while running the auto-pilot, the nav lights and the kitchen lighting
(hence the gerrycan of diesel on deck to feed the engine to charge the batteries). Lockers a very small so you won't have the luxury to embark too much. Also, considering 2 liters of drinking water per day per person, that makes lots of water to store...As I said there isn't much storage space, so you would have to do some improvement or create some...or all you have to store would be at the only safe place...the floor
Just a few thoughts for now as I don't want to make it too long, but cruisers are called cruisers for a reason I think. Having a safe and fast hull is not enough to go too far, unless you get the boat really prepared for it. In fact that is shown very well in the story and the pictures of the First 30 Brak just gave us. Check all these little details on deck and bellow here and there...there are lots of thoughts and preparation behind each of them. And again, changing a little week racer cruiser into a longhaul bluewater cruiser demands lots of heavy equipment...which might change a light fast little boat into a heavy lazy nut shell...
My 2 cents mate.
(sorry for the lack of English marine vocabulary...)