Never second-guess yourself or your submissions. Leave it to the editor to make a judgement call.
Your job is just to write the best story possible, and then to send it off (to the proper market, mind you).
By basically handicapping yourself by putting up roadblocks, like assuming a market isn't right,
or that the editors hate your work, or that the competition for slots is simply too high,
you're doing the worst possible thing, to your work and yourself.
Every time you do this a kitten dies somewhere in the world.