I do 400 miles a week in my cupra which is pretty low and did same mileage in the white fr which was lower at the front with a lower hanging undertray. Just depends if your man enough or not Ive had 3 different cars, all on coilies and done that mileage for 3 years haha
Hope everything goes to plan for you man sounds like an amazing opportunity!
Well done
As for the car situation, your still gunna need something sick for when you do get a few days off