Given your situation, I agree with RW. Purchase the disk player since that seems to be your priority. Both players you mention allow access to the internal DAC. Should you wish at a later date to also use server, you can use the player as a DAC. If using computer as server, further enhancements could be obtained with use of USB converter.
My system consists of a disk player and a computer server. My player does not provide digital inputs so I needed a DAC. If it had, I would have forgone purchase of a DAC. However, I also use a audiophellio2 USB/SPDIF converter between computer and DAC. Regardless of what DAC used, the converter truly improved the sonic experience, always noted by Steve N. Though his might be the best, there are several other which adhere closer to your (and my own) budget.