Well first of all get it scanned to find out what DTC'* are set and why the light is on. You're probably going to need a good tune-up at the least, and maybe a MAF sensor, that can cause loss of power and a rough idle. As far as the low boost, someone else will have to chime in on that, not really my department. The front suspension could be a number of things, such as a broken coil spring; sway bar link; ball joint; etc. The delay in kickdown i have a hunch is somehow related to the trouble codes. Just go to Auto Zone and get it scanned and bring us back the codes.
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