What is the order of decreasing stability among following molecules?

[![enter image description here](https://i.stack.imgur.com/X4kny.jpg)](https://i.stack.imgur.com/X4kny.jpg)


I am almost certain that (IV) is most stable and (III) is least stable. How to compare between (I) and (II)? Is it something related to angle strain?


I am also confused if you can compare between compounds having different amounts of carbon molecules. (I) and (II) have 7 carbon molecules so they would have more bond energy. Is it possible that (I) and (II) could be more stable than (IV) because of this reason?


