I would say without a doubt yes. Cat 5 really just means inexperienced, not stronger/faster. The performance tiers actually start at Cat 4. That's why the Cat 5 upgrade is just finishing 10 mass start races.
Another advantage of moving to Cat 4 is that your competition will actually be more level on performance. Cat 5 will have anyone from someone that should be a Cat 1/2 to people that will just hang on in Cat 4. This causes the races to be less than enjoyable.
I would say without a doubt yes. Cat 5 really just means inexperienced, not stronger/faster. The performance tiers actually start at Cat 4. That's why the Cat 5 upgrade is just finishing 10 mass start races.
Another advantage of moving to Cat 4 is that your competition will actually be more level on performance. Cat 5 will have anyone from someone that should be a Cat 1/2 to people that will just hang on in Cat 4. This causes the races to be less than enjoyable.