A couple of points to add with regard to the functionality side of things: Grey tiles, means grey grout which will be infinitely easier to maintain, every home that has cream or white floor tiles will ultimately end up with dirty grout lines, no matter how well you look after the floor. Grey tiles also hide dirt/hair etc better than light coloured tiles. From a design perspective, as long as you choose a tile that is quite simple and elegant, grey is almost always in style. Matching things to this colour palette is not so difficult, maybe stay away from microfiber chocolate couches though!

this house is such a great example of it's era it would be a shame to change it too much and the dark framed original windows and doors (with horizontal divisions not colonial panes) stained or painted a similar dark colour (including black) would be excellent but only over the original dark trim and others will make better suggestions for colour schemes but if you decide to add the entertaining areas, carport and covered walkways, dark posts, fascias, decking and pathways could make a a nice contrast with the blond bricks..DIY can be a great cost saver but having recently almost completed a similar renovation and about to start on another (we're also a retired couple) i would strongly recommend that you invest in a builder to take care of the overall construction and save money with careful planning (to avoid last minute changes) demolition (NB there's probably asbestos to consider) we saved by sourcing all our own taps, tiles, sinks, doorknobs, light fittings and happily recycled many of the existing fixtures and fittings (including sections of plaster cornices and etc and you could try painting, DIY flatpac kitchen and wardrobes, and consider prioritising the work based on your personal daily comfort eg although i suggested the old sunroom is worth renovating as long as it's safe and weatherproof the upstairs doesn't really need major changes and you could concentrate on the biggest project first OR start small and work up but it's always preferable to plan the whole property to avoid duplication and have a builder quote for the whole renovation and then you can stagger costs (and stagger out of bed each day) doing work in stages...In the meantime i'm assuming that your plans are from a real estate add so your very first project would be to make a very accurate plan of what you already own so measure every wall, thickness of walls, position of windows and doors, width of stairs etc ..even a few cms can make a huge difference in your options (eg the floor of the "study nancave" is probably lower than the living room and not waterproofed so do you want/need it enough to raise the floor, step down, enter under the stairs through a secret tunnel, come in through the old garage or leave it for the the boys??) obviously i can write ad nauseum but you will need proper plans for the external structures so it would be worth investing in professional drawings for the internal work as well your pre-planning will save time for the professionals (and your money) if you're reasonably confident about what will fit the spaces and i would be happy to revise the plans if you want to message me directly with the accurate measurements

Hey Sonia, if you are still on the hunt for a sofa bed you might like to check out our range. We have 2 showrooms in Melbourne (Richmond and Carlton) with a huge range of Danish designed sofa beds to choose from. You can see our full range on our website. Cheers, Alex :)

From what you have said, I think smaller separate pieces such as couch and chair(s) rather than a large sectional is likely to work better in the space and still allow for traffic flow. However, if you still have lots to do then don't rush to make large purchases. In the meantime, if your current sectional looks better pulled away from the wall a bit, then perhaps you could rotate the side table so that the long side runs parallel with the sofa arm instead of the wall. Would that help to stop it blocking the doorway and resolve the 'not quite right' placement?