Yeah there is another way for cheaper car insuarance........
Find a cheaper car a Honda Civic or a corolla, im sorry but at 19 thats very young imo to own a is200 & being a student, you gonna be working as well? When i was 19 i owned a mazda 323 & then bought a Civic ESi auto, i & my friends thought that was impressive for my age back then & did i say insuring it was quite expensive back then even for a honda civic? im 23 now btw & would never pay more than £2k for insurance for any cars.
I do know a student came to uK from HK few yrs back, his dad bought him a JDM celica VVTLi when he was 19, dunno how much he paid for insurance but not cheap, now few yrs gone by now 24 y/o he wants his dad to buy him a 350Z cos he got bored of the Celica!
You can always move to NZ or australia, there are lots of students form other countries there! some people there with Altezza or well known JDM sports cars are VERY young & still at college so insurance & japanese cars there must be cheaper than in UK.