@minipie @maofteens thanks for the other suggestions too, and will definitely have a look at these.
At the moment we have wooden blinds but also thinking on whether to go for shutters?
Keep eyeing up a MADE Margot chaise longue to complement the couches - I like the mustard colour, DH doesn’t, and we both like the grey option but I’m feeling like that might be a bit of a ‘safe’ option. Like the really dark navy one too, DH doesn’t - but I feel it may hide any natural wear and tear in time from use by the children, but thinking the furniture may all seem too dark if we keep the brown leather couches for now although could sell these and get new ones? if I did go for the very dark navy, I would look to brighten with scatter cushions. And noting the colour of the couch and cushions in @LeavesOffTheCactus image, is making me think the very dark blue chaise longue could be the way to go.
Got some tester paints this afternoon to start getting a feel for what kind of colours we like, denim drift and polished pebble coming out as popular options, but wondering if natural calico or fine ivory will give a warmer feel than something like polished pebble?
Thinking white wood work and ceilings.
We never painted a radiator and wondering whether we should do so - need to be confident it would work as it’s a bay window one so would otherwise be an expensive mistake
or any other suggestions on what to retrospectively do with a 5 panel radiator from a decorative perspective?
Also, wondering whether to do a feature wall around the fire place upto picture rail or whether feature walls are now dated?
Will definitely look at Pinterest and imperfect interiors, and would welcome any thoughts on the above or any other suggestions - want to love my living room when finished instead of sitting in it and pondering its potential 
Excited to receive thoughts on the above, or any suggestions and ideas will be very much appreciated.