Welcome

As recommended by RolSkyer, I may be a demoman instead of scout, as the fighting capabilities of a scout in MvM is quite low. Pyro can pick up money also, so I may be a demoman with Loch N Load, Chargin Targe and Ullapool Caber. I will not use the suggested stickybomb launcher because I feel like I need the Targe for:
1.Damage resistance. I don't want to waste money on MvM upgrades. Instead, I will upgrade damage
2.Charge capabilites. I will use the charge to go to front lines without teleporter, escape from enemies to reload or refill health/ammo, or, best of all, to charge at those giant robots(like I tried today) and kill then with a crit caber swing. The splash should also kill any Uber Medics healing it, so though I will probably die and sacrifice myself, I will have taken down many of the robot MVPs.

Also, I have found an MvM server with relatively low ping(80-90 for me, maybe 30 for fiber optics, maybe more for others?) I will share the IP later.