I'll also add that ISboxer has a default option where it would toggle ctrl 1 to send wyvern sting to each of your toons in turn. So keypress 1, toon 1; keypress 2, toon 2; keypress 3, toon 3; keypress 4, toon 1 (it cycles through). This option is called "round robin" and will continue to work forever, unlike in game macros which blizzard delights in breaking each expansion.

Round robin is usually used for CCs like wyvern, as well as interrupts and stuns/snares, (and, depending, different kinds of totems).

Hunters are a good class to start with, but any ranged class is good. Shaman are probably the easiest for beginners and you don't have to manage pets (many people love managing pets, me, not so much).

As for movement, keep in mind that you are usually going to be moving your slaves around by having them follow the master. If you want to keyboard "spin" on the master, and have the slaves do it at the same time, that will probably/mostly work, but it will break follow.

good luck!