if time is not a concern, by all means sit tight and be patient.
Don't give it for free, you put a ton of effort into it, you deserve some reward to help you make more games. So even if its not a major seller, its still money you can use to invest in assets, hardware, etc.
Suggest you look at this:
Find the collections that's recently updated and fits with your game's genre/audience. Then ask them nicely in the comments to include your game in it. It will help drive some traffic to your greenlight.
Also get to Reddit, make an account if u don't have one. Find some subs that appeal to retro gamers or twitch gamers (similar to Hotline Miami!) and make a nice post to introduce your game! Be honest, invite feedback.
That's pretty much my marketing "plan" for greenlight.