As long as it is a normal laptop and does not support some kind of special tablet mode, I would skip the touchscreen part. My last laptop had a touchscreen (because I thought I would use it), but I never used it in a meaningful way. Instead, it created problems because at some point KDE detected it as a mouse and disabled the touchpad during boot until I took the time to solve the problem...

Price doesn't say much about build quality and I would search for a high quality laptop.