I've been in this game for what feels a lifetime already, I have seen many enthusiastic young apprentices spend money on tools only to quit the trade after the first winter either because it was too cold for them or got laid off.. My advice is use that 50% discount on Snap On Wrenches, sockets and ratchets because you'll never never a deal like that on the truck and if you don't like the trade you can always sell the tools for a little loss, Snap-On (doesn't matter the age) holds value stupid good. .. Impact gun I swear by Ingersol-Rand. Another piece of adjust invest in a 3/8 cordless impact to speed up work and most importantly save your hands from cramping up (As I said I have been doing this for ages and I wish we had 3/8 Li impacts back when I started)
Don't bother trying to get a job without the basic tools, regardless of brand. I wouldn't hire anyone without basic tools. Small things I don't mind lending out but after 2-3 times you should have bought said tool. Buy multiple 10mm wrenches and sockets, those always vanish just like flat head screw drivers.
For Euro you will also need ETorx, Torx, Allen and XZN sockets as well complete sets. Get yourself a set of those bolt extractor things for when you strip an allen, torx or xzn. 12pt axle nut sockets are valuable as well
Digital torque wrenches in 1/4 and 3/8.. Don't bother with click type. Everything is torque angle based now for example 25nm + 130 degrees