As for time, I pride myself on putting in as much time as there is for play, as well as being very solid on my feet when it comes to prep.
Plus, if they're interested in one of my existing fleshed-out settings, I could nearly run that for them in my sleep, given their mountains of existing detail.

Yeah, I've been pondering how I'll go about it based on how other GMs do and been looking around for someone to base my initial model on.
I'm thinking a minimum of 4-5 responses a day (as prompted by the player[s]), I have pretty easy ways to handle combat in a more theater-of-mind manner 1/2

That sounds awesome! If you don't mind my asking, what's the inciting incident?

something I think would make for a cool storyline to run and play through.

If it's one of my own settings though, it tends to be a story that comes from the "internal systems" I build into each world that allows them to generate content based on my player's choices, actions, etc.
Sandboxes are fun!

In an era where 3rd spaces seem to be dead or dying across the world, the games i run can serve a similar purpose to them socially.
That weekly game for some is their main socialization avenue and I'm happy to be able to provide the activity they use to relax from a long week of work or their life.

Pop me in the D&D one please, currently designing a massive module for it that will be published, and a bunch of other stuff I plan to publish between now and then ranging from maps to statblocks