I've done this several times.
Syphon off a bucket full of water, put your filter inlet and outlet in there and turn it on, then add your fish to the bucket.
Syphon off as much of the water out of the tank as possible, until there is only water left in the substrate. Try and save as much tank water as is feasible for refilling in your new destination.
Cover the top of the tank in cling film if it's open top. If it has a hood then you should be fine, providing the move takes less than an hour. Try and spray the plants with water as often as possible.
Grab a piece of chip board or similar, rope in a few colleagues and have each one hold a corner of the chipboard. Slide the tank from the cabinet onto the chipboard. Use this to transport the tank to it's new destination. This way minimises stress on the glass and makes it more manageable to maneuver.
Your fish and filter will be ok when you switch the power off but try and keep this time to around half an hour.
So, get your big guns out and good luck!