If Nats want 3 highers and you got 5 , you got what is needed....they are not interested in whether it is a C or an A+++ as long as you got the requirements. I know i had the minimum which is less than you and they they let me in.
if it is what you want to do then go for it....got to admit i wouldn't want to do anything else and many controllers are the same......have a look on the threds on this site....some of the chaps have put a lot of effort into giving an insight into what is needed and ....boy does it help.......I know. 2nd time round it made it a lot easier...but bottom line is you got to sell yourself....be bold, positive.....and a tad arrogant......might just get you there
