If you hate what you are doing now, don't bother coming to the commercial side. If you hate getting paid crap for what you do, but don't mind the work, that's a different story.
As an SRO, you would still be in a 'box', but they tend to be quite a bit bigger.
From what I've seen, it's analogous to say that an SRO is like a Navy Watch Officer + Division Officer combined. Plenty of watch related things to keep you busy, and plenty of admin stuff to make you even more busy. However, the pay makes a navy lieutentant's look laughable.
Being an EWS would help you, but I recommend to just about anyone getting out of the navy and going commercial is to get some plant experience as an NLO (or EO, whatever you want to call it). Not saying you can't make it straight as an SRO, but you'll be killing yourself every week to get ready for the exams.
On top of it all, you might hate the SRO lifestyle, and you'd have wasted a lot of your effort and time.