r3v3rs3

So here is my question plain and simple. On my laptop should I load up BT4 and Ubuntu in VB along with an XP bitch, and make them all fully network capable with their own static IP and everything (which I hear you can do in VirtualBox). Or do I dual boot Ubuntu / W7 and put BT4 on an SD card and put a virtual XP Bitch box within Ubuntu / BT4 (Which would require a persistant install? Im basically looking to do some middler stuff with my jasager fonera (pineapple), and some metasploit.