Start with the drives in. Once on plane you trim the drives up or out. It lifts the hull and reduces the wetted surface, decreasing friction and increasing speed. If you over trim you'll start to decrease speed. Find the sweet spot.
Some boats need tabs to plane quicker. Sounds like you don't. Tabs can be used to stay on plane a lower speeds, correct a list from uneven weight distribution, etc. Play with the tabs in small amounts to see how your boat reacts.