Maybe. You can't really tell unless you knew what the case and motherboard are. Also, the 300W PSU might be a bit on the light side to handle everything.
The motherboard may not have an extra SATA port or possibly even have any SATA ports. The case isn't as big of an issue as you could just replace the optical drive it comes with.
If you absolutely want a BR drive, you should buy a prebuilt with it (or build one).