[Powers] Control+Create with Extended Duration and Reduced Time

[Walrus]

Is it possible to enhance Control with Reduced Time to make Long Tasks faster?

And vice versa, is it possible to enhance Create with Extended Duration to make created matter last longer? Is it legal to enhance Create with Reduced Fatigue Cost?

And what are common Long Tasks duration?

The idea is to have a Cryokinesis Psionic (or Super). She is capable of creating ice "from water vapour in air" but in such quantities that it hardly qualifies for Environmental (imagine Storm or Iceman from X-Men). And she'd like to create ice figurines (yes, she has Artist (Sculpting)) and ice daggers (again, with Armoury (Melee Weapons)). And she doesn't like the idea of separate IA (like TK Bullet and Chill Factor perk from PP), she would like to create a bunch of icicles and throw them as Throwing Knife (something like failed Armoury roll just creates blunt ice baton, ordinary success creates Cheap Throwing Knife with (0.5) AD, success by 5+ creates ordinary one with 0.5 (AD) and critical success creates Fine Throwing Knife with AD 1).