Have you looked at the new MBP's? I have a 13" that bootcamps windows and mavericks. Only 16GB of RAM, but I can easily run multiple Linux and Windows VMs (7, 8, and Linux) that has a slower i7 than the 15". The PCIe flash drive and 16GB is plenty for most of what I do. My 'docking station' is just a single thunderbolt (mini-display) cable and power adapter.
The 440s and 430s are pretty good.. .but if you need greater than 14" and that much internal guts, it's probably not gonna happen at the weight you want.