For a portable plug in and go set up I use old road cases with the 19" rack built in. Have built several over the years. Set the case on a table, remove the front cover, remove the rear cover, plug it in, hook up the antennas, and your all set up. Weight is an issue if you use ginormous batteries installed in the case. Also inside the rear cover there is usually plenty of room to store the loose items like mics, key, and other useful station items.
With this set up, if the antennas are set up (now the hardest part), takes 10 minutes or less to get on the air.
One system I built had everything except the batteries built in 1 case, and a separate battery case with power pole cord to just plug it together. That way if you had power available, you wouldn't need to haul the batteries to the set up.
This would be a dedicated approach that everything is basically pre-wired and solidly mounted. Just thought I would share as an example.