Work laptop/tablet recommendations + SSD upgrade & cloning Microsoft Windows?

I'm looking to pick up a laptop that can handle some field work. My main goal is to ensure everything on it stays fully licensed. To get the best performance for my money, I’m thinking about swapping out the DVD drive for an SSD...
My budget is around $400, though I might be able to stretch that a little if needed.

1.) Is it actually possible to clone the Microsoft Windows installation that runs during the initial setup onto an SSD, and then just use the old HDD as extra storage for my files?

2.) Will this affect the manufacturer's warranty on the laptop?

3.) For roughly the same price—or maybe just a bit more—could I find a model that features a touchscreen?

Thanks in advance to everyone for taking the time to weigh in.

I can't say for sure about those licenses, but honestly, that's nowhere near enough money to pick up a decent laptop equipped with Microsoft Windows and an SSD, let alone one with a touchscreen.