To me, the only difficulty is judging spoke tension: how much is enough, and are they equal or not. If I were to blow money on a wheelbuilding tool, it would be a tensionometer (?). There's absolutely no need for a stand unless you want to build dozens of wheels. Flip the bike over and use your fingers as gauges.
Using Sheldon's suggestions, it was pretty easy to do, and the wheels are doing just fine so far.