I have a Rotary tool but hardly use it at all.
Some people love them, I just haven't found much use for it... Get some of the basic supplies it'll be enough to build a simple laser cut kit like the SSE.
Later down the road you can get a rotary tool if you need it, but for your first build it's not a "must have".

A drill you need, I use a normal cordless Bosch powerdrill, this is pretty much the only electrical tool I use when building and fixing my planes.


....I'm waiting for my SSE to arrive too