We encounter the roughest water near our homeport of Everett, Washington on a regular basis. The westerly winds, against a tide and a strong river current where the bay shallows from triple digits to 20 feet can really kick up the water.
I have found that if we slow down a bit to about 9 knots and use the trim tabs to raise up the bow, that the spray hitting the cabin is less. However, keep those windows and hatches closed because the wind-whipped blue water will soak the outside of the cabin. The wipers are really handy here. The trick is to keep the bow up as the boat rises and falls in the swells. Keep everybody seated. Lifejackets should be on (the inflatable kind are really comfortable). Put stuff in the sink that may go off the counter and if you use non-skid material on the shelves and table, things will generally not slip around. In steeper swells, slow down a bit more and we will "quarter" them, i.e. not hit them dead-on nor parallel them (a great way to get into big trouble fast) but take them at a 45 degree angle. You may head directly for you destination and may to make some opposing turns but it is safe and the ride is better. Too much speed will not only make the ride uncomfortable but the steering will be harder.
We have found that the boat will be fine. It is the skipper and crew that will need to learn patience as "this to shall pass."