You're not a rigger unless you have a control rig. An RCC is helpful too.
Electronics[Sensor Ops] 6[+2] Your drones/vehicle sensors will substitute for Perception Tests.
Gunnery[Ballistic] 6[+2] Remember to add a hidden weapon mount to your vehicle.
Pilot Groundcraft[Wheeled] How much you invest in it depends on your REA and what level of Control Rig you have.
Pilot Aircraft How much you invest in it depends on your REA and what level of Control Rig you have.
Engineering SG 1, you should have high logic plus tools etc so it don't need to be supper high.
Any skill points after that depends on what you want to bring on the table for your group.
Since your limiting the amount of places you can go, might want to consider being a rigger/decker and sit in the van primarily.