First of all- thumbs up for your effort-but there is a factor that you should take into consideration before you fit longer struts.
get the front of your sporty in the air using 2 trolley jacks-and take a long hard look at the suspension. you will notice that when the front shocks are fully extended the bottom of the shock (where the forks are attached) is about 3-4 cm away from the rubber cv boots. now-as long as you fit ANY kind of spring-even 4 inches of lift- onto the original strut-it wont matter because the bottom of the strut will never go any lower than the stock position. but if you will fit a longer strut than the bottom of the strut will be lower-which in turn will tear your cv boot to pieces. I am currently facing the same problem because im using a 2 inch lift coil and a 3 icch spacer-the result is that the bottom of the strut has gone down (cause of the spacer). i think that if you will fit longer front struts you will have the same problem.... so take a good look and do some proper measurements before you extend the struts.
ps: why mess around with the front anyway? IFS has its limitations- and that is it. fit a drop kit to the rear-or get some REALLY long travel coils and shocks for the rear-and that should solve any articulation problems.