The 410 format works fine, as long as you are in front of it. Once you, or more significantly your audience, are off the the side a bit, known as "off-axis," the mid-range frequencies from the speakers are lost. In effect, the 410 is a very directional cabinet, with poor mid-range dispersion. From off-axis, they are muddy.
However, they can be loud, are unwieldy, often heavy, and thus can be found quite cheap. If you find an Eden, SWR, Ampeg, etc. for under $300, grab it.
Much better would be a pair of 112 or 115 cabinets. For me, I love my 212 that has tilt back wheels. Of course it is a fEARful, and that is a whole 'nuther topic.
In general, a pair of identical 8 ohm cabinets is the way to go. Of course you can start with a head and a cab, and then add the second cab if you need ("want ") it.