To help you we need a screenshot from the kernelpanic or something.
Without it we can´t help you. Your systems hardware doesn´t matter if you´re installing it on a virtual machine.
For the RTC fix you can edit your dsdt or you can use elliotforcertc.kext.
To install a other kernel just replace the mach_kernel or legacy_kernel in root on your drive and you have to look up in the boot.plist which kernel is used by default.

Did you try to find something about installing mac os x on virtualbox?
Because i´m not sure that it will work ever.

Why don´t you install it on your local system, because that would be the best solution?! VM´s are much slower running a cracked mac os x and working doesn´t make fun.

I also tried installing mac os on a vm but the speed is horrible.

I would think about it!