Buying a Former Rental Class C. How many of us out there?

Do you have any ideas which upgrades to steering and suspension made the most difference? We already had the steering bits that were bad replaced and an alignment (desperately needed) and added the roadmaster steering shock (I'm thinking I have to adjust it though) The rear antisway seems very thick already but it looks like the front could use replacement. I'd personally love to lower the toilet in the 28a (and of course a 50 gallon grey tank)