-
It’s still too big for the plot
I can see your point but loads of people feel differently. A big garden is seen as a hassle by many as it requires maintenance. I'd be more worried about the garden being a bit overlooked.
what looks to be a busy road
I've never visited but it looks like you can only access that bit of High Street from St John's Street and you can only exit back on St John's Street behind where you started so it is no use as a cut through and probably fairly low traffic as a result.
But it's got loads of character and quite a lot of space. Might not make much financial sense but could be a really great home.