Hi Ashok Rajagopal, i am really sorry for the late reply,
First of all,congratulations on your new Alpha.
For the suspensions there is really no solution, how much pressure do you keep in the tires? try to keep it at 29psi for comfort. The car comes with higher PSI from the company.
The accessories list of yours is same as mine, i have done all the above from Nexa itself.
You should definitely go for Door and Bumper protectors, helps a lot from minor scratches and dents.
i have already changed my Foglamp to BI-XENON LED from Xenon Planet and enjoying the night drives.The fog lamps are very powerful and have a good range.