Well, as is often the case, the answer is clear as mud: "It depends".
First, what model ski are you describing? I assume AWB 2500??? If so, are they AWB 2500 or 2500A models? I know the A models were approved on the older 180's, and they are also approved with 8.50 X 6.00 tires, which is a bonus. I've got AWB 2500's with A model rigger arms, and run 8.50's on a Cessna 170.
These skis are pretty small for even my airplane, which has a 2200 pound GW. But the biggest factor is related to the type of use you're going to put them to. If you're talking about snow the likes of what I've come to expect in most places where people fly on skis i8n the lower 48, they'll probably work fine. Every picture I see of airplanes on skis down here, there is very little snow. Nothing sinks in. If that's the case where you're at, these skis should be fine.
On the other hand, if you plan to go north, or anywhere there is REALLY some snow, as in deep and no help close by, then I think these skis are a great way to hone your wilderness survival skills.
You can improve their performance A LITTLE by extending the plastic bottoms out to the sides, and that will definitely help in deeper snow. They DO have plastic bottoms, right? IF not, put some on.
Check the rigger arms, and make sure all the parts are there. Look carefully at the riggers, AND especially at the tunnels for cracks or other damage, or ugly repairs. Mine cracked out around the pedestals, and one rigger arm cracked. Steve at Atlee Dodge went through them completely and mine are now like new. Bring $$. Steve did a great job, and it was cheap, compared to what I expected.
They are durable skis, so if all you plan to do is buzz over to a fly in or four, etc, they'll work fine. My experience is something the size of a 180 on skis can be a LOT of work, no matter how good the skis are, IF you take it into any challenging snow conditions.
They are also heavy--around 120 pounds the set, as I recall, but that's typical for retractable skis.
MTV