I hate to be a downer but working as a mangaka in real life can be kind of ass, right?
I don't have any experience myself but seeing this last chapter gave me flashbacks to some of the other stories I've read involving mangaka.
Yeah if Bakuman is even a little accurate then being a mangaka seems like a terrible occupation.
It actually seem worse, considering Bakuman idealizes the profession and clearly makes everything sounds as good as possible. (!I almost died drawing but that is good because showed my passion!"). If even it makes being a mangaka sound dreadful, the reality must be even worse.
That said, to be fair, working for a big, hyper competitive, weekly magazine might be considerably worse than working for a smaller venues. Inko is still an amateur, right? So tight deadlines aren't a constant yet. And if she find job in a monthly or even bi-monthly magazine, it likely will be a more relaxed pace than Shonen Jump (though smaller pay, of course)