118 homeworlds.
OBJECTION!
How exactly did you pick that many Homeworlds?
To me the lobby only ever offers a small section of the map as possible homeworld locations.
On a sidenote, I think that is literally impossible to stop, even if you were to have a spire fleet with 118 times it's normal cap immediately ready. I think that blob could EASILY overrun even the spire galactic transit network's "waves".
Can't even imagine how you'd stop that in only a few minutes of production and with only normal fleet ships + starships available (all homeworlds = zero superweapons, short time before first wave = no fallen spire cities).