Need help: Starting new system long

Hi, this is my first post here, so please forgive me if I missed previous similar posts.
I am looking for a new system, and I need some advice as for how to best integrate two digital sources, in the form of an optical TOSLINK, from a computer and a CD player (for the CD, I could also use the analog output). I would like to also have the capability to listen to analog sources (a tuner comes to mind). My budget is limited to a few thousands. There are a few ways to do this:
1. Buy a DAC and feed the digital input(s) into a conventional system. Advangages: Lots of options for conventional equipment. Disadvantage: have to buy one extra component, the DAC.
2. Buy a preamp or amp that has a DAC input. This would seem to be the more reasonable option to me. I have only made some limited research, but is seems that I cannot find preamps with DAC inputs (I would prefer to keep preamp and amp separate for more flexibility). I have found the Mambo amp, but I am not sure how good it is.
3. Buy a fully digital preamp. I have no idea about this. Can someone please give me some pointers to good products at reasonable price, if such exist (I am ready to buy used).
4. Go all the way digital including amp. Have no idea about this either, but it seems new and risky.

To give you an idea of where I am coming from, I used to have Electrocompaniet amp and preamp, and Mirage 3 speakers. A combination that I loved, but I doubt I can afford now.

Thanks for your help.