Being a ThinkPad fan, right no my main workstation is X1G2. However, its predecessor was X230. I think it satisfies your requirements, or make them most. It has/can have a decedent 9-cell battery, i5/i7 2nd gen CPU and two SSDs (mSATA and SATA). It has 2 USB3 ports, can have Bluetooth v4 card...