I'd really appreciate any thoughts you have on these sofa choices. As per the name I am fairly useless when it comes to interior decoration and in fact this is the first sofa I'm buying! I can't say I have a specific, defined style but generally I prefer a minimalist look but I also live in a Victorian (terrace style) home so I feel I should also nod to that. I've been told I have a mid-century style 
I'm looking to buy a sofa for our bay window. It's a fairly narrow one, so the sofa needs to have a fairly small footprint. Ideally I'd be looking to spend around £400 but I'm worried that this is too cheap and it won't be a solid long-lasting piece. These are the ones I've shortlisted - considerably over the target budget but I do feel it's worth spending more if it will be a better quality product and tick all the boxes.
Oliver Bonas luna love seat
I've not managed to view this in person and sit on it which is putting me off. I'm not sure there is enough of a seat back to be able to sit comfortable and have sufficient back support. Delivery time is 2-4 weeks which is ok. I'm fairly boring so was thinking of the light blue which will match the mid-blue curtains behind it. On the other hand I'm tempted to be a bit bolder and get the dusty pink, which sounds lovely. I do have young children but they're generally ok with not getting furnishings mucky (I may live to regret saying this).
Sofa Workshop 2-seater
Delivery time is 18 weeks!! Not really happy about waiting that long but otherwise I've managed to see it in person and it feels comfortable and satisfies our requirements. The original price seems very high? Not sure if this is indicative of quality or just over-pricing.
Any thoughts?? Or other suggestions?