Just sitting in the garden, relaxing and enjoying the sun, so I don´t have my books with me and write this from memory, so excuse any errors:
Try to go this route:
- Blue Collar
- Prep School
- Military Enlistment, fields: Basic Training, Technician/Military, Technician/Mech (tech/military is better than tech/civilian)
- Tour of Duty (Exp to fields)
This should cover all bases.
Just make sure you have some good ranks in Career/Soldier and Career/Technician, as they cover the "generalist" approach in that regard.
I´m not so sure about Tech Empathy. Feat learner seems to be the overall better choice and I never cared to find out if both stack. The bonus to skills checks in non-combat situations bored me, as me as gm don´t roll outside of combat or stress, so I ignore that. Tech skills are keyed to dex and Int, the +3 TP points could be spent better in improving these overall attributes, especially Dex.