I just signed up with https://siteground.com. $4 / month, no setup fee. CPanel backend, 5 mySQL databases, unlimited e-mail, etc. etc. Used a credit card, and they might do PayPal, too?
I get a referral bonus, so let me know if you’re thinking about using them.
This probably won’t help you, but wp-admin/post.php seems to be the primary editing input page. At least, index.php redirects to post.php. Now, when it comes to what you DO with post.php, I haven’t a clue, yet.