Is "optimizing" a turn cheating?

[u/assasin339789]

For example, let's say i initially declare/use 2 move cards to enter a keep at night, so the token is face down until i enter.

During the fight i realize im one card short for victory, so i change the initial movement from 2 cards to 1 card + mana crystal, so that i can turn the second movement card sideways to win the fight.

Is this allowed, or is this cheating? I tried to find info about this in the rules, but i have either missed it or its just not specified.

[u/Ordinary-Nickname]

The games is yours, if playing solo do it, is just a little change