The way I typically land the Spitfire on Sim, I usually kill my throttle completely, and free float while keeping my nose pointed slightly upward, not too high (don't want to stall out), and come in very soft using the first person view to adjust my altitude. Once I get ready to touch down, I switch back to cockpit view and ease my back wheel down first while I slowly touch down with my two fronts. It's tricky to do and takes some practice, but once you get it down, it'll become easier, hope this helps.
