Looking good, so you fitting these this weekend then?
Yeah you don't need those solid top mounts on a road car unless your really serious about eliminating all the rubber in the suspension and turning it into a 1.6 ton go-cart and sending your wheels square on pot holes!
You cant adjust camber/caster with those plates, but even if they were our double wishbone suspension isn't adjusted for camber/caster in the top mount anyway, your thinking of McPherson strut suspension.
As long as your std top mounts are in good condition, just stick with those.
The numbers on those springs: 60-200 and 90-200 I believe from looking at your picture?
Well the first number is spring rate in Newtons/mm, the second number is length. So both are 200mm.
If you did want to use a longer spring you would ask for 60-250 for example for the rears.
If you want to go alittle higher spring rate in the rear I have run a 70N/mm linear spring before and its about the limit for comfort vs performance. It may surprise many that you actually don't feel high front spring rates through your backside/spine as much as having a high rear spring rate. High rear spring rates are only for the track not pot holed public roads...don't ask me how I know!lol