Advice on kitchen/diner layout

[SwedeInLeeds]

Me and DH are viewing are viewing a property next week that we think we're very likely to put an offer on. Slight issue is the sad kitchen that we would intend to remodel. Here's the layout:
ibb.co/n6W30xH

We were hoping to knock through the wall between the kitchen and the diner to make an open plan kitchen/diner.

This is my quick attempt at a layout:
ibb.co/N72ZzXy

Does this seem reasonable? Is there any other obvious solution I've missed?

Have you rotated the map by 180 degrees? I assume so. What's the thing with the two chairs? An island? If so I'd forget an island as it doesn't seem big enough for one. I'd extend the end of the run of worktop out to a peninsula and not put breakfast bar stools there, I think they clutter up the place. Just have a great dining table and comfortable dining chairs. We have this arrangement and it works so well. Also the fact that you have so little space either side of the island would be an absolute nightmare to move around. It looks like you have loads of windows at the end of the kitchen that is near the stairs. Very confusing layout tbh!

Yup - knocking through is really common in old Victorian houses, which is what that looks like.

The tricky thing is (1) structural. If you need to put in a supporting structural beam, that will sit on the party walls (i.e. the walls between this property and the neighbours) then you need a Party Wall Agreement, which can either be a 10 minutes walk in the park or months and months of delays and thousands of pounds.

To see if its technically feasible to knock the wall through, try to find previous house listings on Rightmove sold pages, on the same street or nearby streets, with the same house layout. And see their floorplans. If you're bold enough (maybe not during COVID) go knock on those doors, they might let you see how they knocked through and offer you advice, and costs, and maybe a builder recommendation.

its not cheap - knocking a wall through, with structural supports, will probably cost you at least £5k if not £8k+, just for the works.

Thanks dahokolomoki, from previous posts on mumsnet I thought the knocking through would be quite a bit cheaper, usually £400-500 for the engineer and 2-3k for the beam + works. Any reason your estimate is so high. Is this a particularly large knock through?

MrsJamin, thanks for the suggestions, I clearly struggled with trying to use IKEA's planner along with our unconventional layout. I did rotate it 180 degrees, the things appearing as windows at the bottom left are all doors actually, I was thinking perhaps I could get rid of these to make space for an L shaped kitchen.

I was really hoping to fit an island (which is what that brown thing is, but maybe there's not enough space. I guess I could move the fridge somewhere else. Other option is to extend but that seems insanely expensive. I was hoping with 24m^2 it would be possible to create a nice open plan design, the room is just really oddly shaped.

Ah I see. Could you move your cupboard door to be opened from the hall, and your door to the side to be not used? You'd get a lot more usable space in your kitchen then. You must get the right support for your wall, obviously as per the previous poster. No way is that kitchen big enough for an island. Only really large kitchens can cope with an island as you need so much walkway around it.

Also if you have knocked through to make one large space you only need one door to enter it, not two. I'd keep the one that currently goes into the lounge as then you will make the most of the kitchen space.