Replying to Does it worth for a park beginner to upgrading from a 2-piece boot to a 3-piece boot?

Hi NS!

I am sort of new (but very passionate) to the freestyle skiing world.

In the beginning of the season, I bought my first pair of twin tips: arv94 with p18 (please don't shame me for that, had a good deal on them). Loving the skis. Don't even consider going back to directional/carving/all-mtn skis any time soon.

Nevertheless, I have a rather good fitting Atomic Hawx prime 120 GW with an expert booster strap, a rubber shock-absorbing footbed, and a custom insole. I am 190cm (6'2), 95kg (210 pounds) rather advanced alpine skier.
There is no "real park" at my home ski resort. Mainly natural features, bumps, and amateurly hand-made kickers here and there.

Taking in account that for me there are more or less 2 months of skiing left (15-20 days), should I upgrade to a 3-piece ski boot (K2 Fl3X Revolve Pro or revolve TW), or keep my Atomics until the next season and hope for some upgrades to the revolve line-up? I've tried the Revolve Pro at a shop, fits me like a glove, but the flex seemed kind of soft (maybe that's that progressive flex everybody is talking about).

Any suggestions would be much appreciated!

Thanks in advance!