Street Credit!!! Royal marine a cerdibilty dont go together!!! royal marine and surrender do!!!!! Only joking good luck mate dont worry about the maths to much get your nose into puzzle books and sodko. if you have done junior brecon it helps at the tactical phase off flying. Also if you have a mate flying already get him to go throught basic nav on whizz wheel. as for the medical mate you will be fine.
GOOD LUCK WITH IT.
AND REMMBER PARA REG ALWAYS!!