Those boots may be a little soft for you, especially for racing. But really, selecting and setting up boots is something that can't be done well over the Internet. There are far too many variables and inter-related factors involved.
Remember that stiffer boots are more precise, and softer boots are more forgiving. The purpose of a ski boot, of course, is to transmit your movements directly and precisely to the ski, AND to transmit feedback from the skis and snow back to your feet. To do these things, they have to fit well, support your feet and legs properly, keep you warm, and be sufficiently stiff.
A stiff boot will transmit your movements very quickly and precisely to the skis. That's great if your movements are accurate--but remember that stiff boots transmit your mistakes just as quickly and completely as your correct movements! That's why slightly softer boots may be better for less-skilled skiers.
Also, because boots hold our heels down and seriously restrict the range of motion of our ankles, skiers must learn to move in different ways than non-skiers when we flex and extend, in order to maintain fore-aft balance. Until these new skills and movements become refined and consistent, a little extra motion in the ankles from softer boots may help.
But if you are highly skilled, and need the precision that racing demands, you need a reasonably stiff boot. The stiffer the boot, the more important it becomes that it is correctly set up for you, with forward lean, "ramp angle" (inside the boot), and "delta angle" (angle of the boot as it sits on your bindings) all playing critical roles. You simply won't be able to move correctly if stiff boots are incorrectly set up!
Please do not take these words to imply that you should be pressing forward on the tongues of those stiff boots--usually. Today's skis generally respond best to pressure centered over their "sweet spot"--which usually means that you want to be centered on your foot, neutral
in the cuff. From this centered stance, stiff boots allow you to adjust pressure fore-and-aft very quickly, subtly, and when necessary, powerfully. They also allow you to quickly regain your balance when you lose it.
One thing that boots do NOT need to be able to do--contrary to popular opinion and "conventional wisdom"--is FLEX to control your skis! Your skis respond to pressure. They really don't care whether your boots are bent or not! And stiffer boots will give you more immediate and direct control of that pressure--IF you are in balance, properly aligned, and have the skills. Do not believe those who tell you that you must be able to flex your boots deeply as you go through a turn. It ain't so! The latest trendy belief (read "misconception") is that today's shorter, softer skis with deep sidecuts, for some reason, require softer-flexing boots. Nope--they STILL just respond to pressure, not "flex"!
It isn't even so in moguls. While stiff boots are notorious for causing bad "shin-bang" in bumps, if you learn to move correctly, you will not bang your shins even in the gnarliest of bumps. Yes, a LITTLE "give" will again soften the blows when we make mistakes. But hey--who makes mistakes!?
Like I said--it's a tough call to prescribe the "right" boot for anyone over the Internet.