Four smaller launches where placing first is realistic, spread across four weeks.
Peerlist, Uneed, MicroLaunch and DevHunt run weekly cycles with far smaller fields. This is where a solo maker can realistically place first, and where the same launch material gets four more uses.
Free slots are often scheduled weeks out. Look at the upcoming list and choose a week that is not already crowded.
Firing all four at once wastes the material. One a week means four rounds of sharing from a single launch.
The gallery, tagline and demo all transfer. Adjust the length of the description and nothing else.
Projects posted from empty profiles get ignored there. Fill it in before you submit anything.