You're talking about a 23 year old trailer, only you can decide if it's worth the cost of a complete leveling system. There are other ways to stabilize a trailer, jack stands and scissors jacks, bottle jacks, etc. While it would be nice to just push a button or two and have the trailer leveled and stabilized, if you're leaving it in one place for long periods of time, electric jacks might not retract when it's time to move it.