Worldbuilding

It's pretty good I think.

The only criticism I have personally is -assuming you want to be realistic on those points- a feudal system wouldn't be able to deploy the industrial capacity to make things like spacecrafts and mechanized infantry on a large scale.

Feudal forces and relations of production are centered around agricultural labor in the countryside by serfs tied to their lord's land meanwhile guilds are early bourgeois operations that the nobility keeps around because they are necessary for their manufacturing needs but never hesitate to violently repress if they become too powerful.

Furthermore, feudal nobility would probably suppress the kind of automation necessary for industrial mass production if a guild tries to develop any because a bourgeoisie with even the simplest actual factories would quickly overtake the wealth and influence of feudal lords with their inefficient serfdom, thereby forcing the lords to either abandon their fiefdom and become a bourgeois or be overthrown.

So by the time a society becomes able to go to space, the bourgeoisie would have long taken over and the society would by firmly capitalist, probably even late stage capitalist.