Adjusting H&R Coilovers Advice Needed

[cliosportap]

last week i have fitted my hr's the car is as low as like eibach sportlines for now i guess it will lower 4-5 cm more
after i fitted them i recognize a vibration at 80-90 km/h but after 110 it goes away.
before i used konis with eibach springs and there wasnt anything like this
is there a adjustment to do with it like camber or something, what should it be?
also what will be the max drop on hr's because i havent got a spanner i cant change the hight for now. i think screwing upwards the adjusting nuts lowers it ?

 

[Cupman29]

You will need to adjust the front camber if you lower it below the standard ride height unless you want lots of neg camber.

 

[Cliotoby]

My HR's drop to 7cm