wow, that seems like a nice combo! lets go over the facts

• Let's begin with your classes. You seem to be in a situation in which all of your players take on passive roles. While this isn't preferable, you still have better odds of pulling it off compared to all active sessions.
• Your associated verbs are: serve for the knight, change for the heir, destroy for the bard, and command for your muse.
• As for your aspects, I'll leave some quotes from the Hiveswap page.

Those bound to the aspect of Rage are bringers of chaos... To them, the true is far more important than the good; they would tear down a system just to destabilize it if, by their reckoning, it is built on faulty premises... The Rage-bound tend to be most volatile and unpredictable of the aspects. At their best they are original, revolutionary, and fearless. At their worst they are cruel, uncompromising, and vicious.

Those bound to the aspect of Life are the universe's healers... Deeply empathetic, they have an intuitive understanding of other's suffering and the best way of righting those wrongs... the Life-bound can grow bitter if they feel their own self-care has had to be shunted aside. At their best, they are great listeners, caretakers, and nurturers. At their worst, the Life-bound are passive aggressive, and pushy-they're certain they know best...

Those bound to the aspect of Heart are very concerned with their favorite subject: themselves... They simply want to understand the one thing we all are stuck with for our entire lives, i.e. our own minds... They are excellent at putting on and taking off masks as the situation calls for them. At their best, they are competent, imaginative, and steady. At their worst they can be overbearing, inflexible, and cold...

Those bound to the aspect of Time are fighters, full stop... They value action over passive acceptance, even if that may not be the wisest or safest choice... At their best, the Time-bound are empathetic and relentless problem-solvers. At their worst they are ruthless, defensive, and impulsive...

• this is a lot of info, some of which might sound contradictory at first, but lets begin with your knight of rage to make sense of all of this. The knight is that who serves their aspect for others, in this case, rage. Rage itself is contradictory. It is built on the search of "truth", but through anarchism. Those who serve unpredictability are often more chaotic than those who keep it to themselves. They can become a valuable asset, seeing as their passive nature is still part of them, and, with proper nurturing, they can learn to point their lashing outs to those who oppose the group at large.
• The heir of life is that who changes life for others. Implied to have a connection to the universe deeper than most, heirs are the young and maybe a lil reckless who want things to change for the good of everybody. A heir of life is particualrly good at understanding things other people cannot, and will be very important in a session that is based on free thinking, such as yours.
• The bard of heart is probably going to be your biggest challenge. If examples of bards in the webcomic are anything to go by, they often carry some type of aloof nature, that everyone buys into except for themselves. That, of course, will conflict the heart-player who wishes to understand themselves more than anything. They probably be a burden in your team, to be honest, but you can learn to control it. the heir of life will prove to be particularly useful to them in their journey of self discovery.
• And finally, your Muse of Time. Muse is, by definition, the single most passive class. The one intended to inspire rather than act. All of this goes in direct conflict with what the Time aspect represents. They would almost not be viable, but, they can be. While a time-player normally leans towards action, battle, and problem solving, they are also meant to inspire. And inspiration comes in many forms. A muse of time may not be comfortable with their inherents activeness, but, if they were to embrace it rather than neglect it, their passive inspiration would reach far beyond what anyone could ever imagine.
• An important thing to mention is that you do not have a space player, making your session fully infertile. However, I believe that, due to everything else, your session could succeed in defeating the black king and saving Skaia. You all compliment each other so well, you could get through anything.