I will chime in late and on the in-experienced side of things. I did one batch with whole fresh hops that a friend had on hand.
I had always used pellets in the past hand never had any issue with hitting my volumes. (well before I go my new kettle so I am now figuring out boil off rates again)
This batch with out knowing left almost a gallon low in the carboy. It was 4 oz of fresh Cascade.