So I set my item to round to nearest 1, but the sub takeoff items dont round, these only show up on the report:

Is there a way to have these rounded? Or have the system take on the properties of the item?

In our upcoming update, there will be a feature to allow calculating the formula at the object level. I believe this will solve what you're after. Instead of rounding after it totals all linear objects, it would execute the formula and round separately for each object.