It’s not a doer upper. This is what one of those looks like.
www.rightmove.co.uk/property-for-sale/property-69179220.html
Some of the refurbishment costs being bandied about here are insane. For £5/600k, you could raze it to the ground and rebuild it. It obviously needs work but, from the pictures, not as much as some people think.
If you want modern living, like a huge kitchen diner and bifold doors, a listed house isn’t for you. We love the quirks of ours - the uneven floors, the windows at a squint, the odd little nooks and crannies. Very old houses don’t lend themselves to perfect finishes and strenuously fight back when you try to impose the wrong thing on them.
Go and have a look, OP, but don’t try to turn it into something it’s not. If you want to do anything more than sympathetically update it, leave it for someone who’ll love it as it is.