spend more money on pre or power amp ?

I'd buy the amp that made my speakers sing with whatever it took, and buy the pre with whatever was leftover. Then, when funds allow, you could buy the pre that fits the system best. You can buy a lot of amp for much less than 10K so you should be able to take my approach and maybe even get the perfect pre as well.

Spend your money on the CDP and speakers first then the amp and pre.

There are tons of different approaches selecting an amplifier but at first it should match speakers.
There are many 'philes would say that preamp is the most important component in the system as the general rule of thumb but far far far it is not. I'd figure that in low powered system yes, preamp plays the most important role among all the components but in the high-gain high-power approach the amp is the king even over the speakers.
You should also realize that there are high-sencitivity amps and so as speakers and figure out your "nirvanic equilibrium" in that sence got it?

My money goes to the front end.