Replying to Modifying full tilts

I have twall boots and I want to make them more of a “performance” fit.

I am thinking of getting a new liner for them that fits more tightly around my foot for my shell, I have a 27.5 shell. Do they sell something that takes up more space I can use? I did the finger test and I have roughly 2 fingers behind my heel but when the boots are on my toe lightly grazes the front but when I lean in it comes back a lot.

I am also thinking of getting a stiffer tongue like 10-12 rather than the 6 that mine comes with.

is there a possibility for shorter cables as well because I max the top 2 buckles out at all.

yes these were fitted by a boot fitter and I tried all sorts of boots on and they fit well when I bought them.

Thanks