Just a thing to bear in mind about slings ladies, you may only use it for the first 4months. It hurts the shoulders & back as baby grows bigger & heavier. I never used mine past 3months as my babies were big. And to be honest, I only used it a couple of times with my oldest. With my youngest, I rarely used it, except for occasional short walks when the oldest has gone to school.
I use my car alot for daily tasks so i tend to use the car seat a lot more. i just lift the carseat off the car & click on to the pram...unclick & back to the car. That way you don't have to wake a sleeping baby. I used carrycots for family outings and for downstairs nap at home
Slings are not something you want to fiddle with when running late for an appointment or during school run.
I totally recommend a lightweight travel system which gives you a lot of options of which part to use at particular time. And a sling ofcourse!
Brother inlaw gifted us a bugaboo fox for my youngest which to be honest its amazing but we would never have afforded it ourselves because its really expensive. But there are alot of decent priced ones which you are equally as good, if not better. I used a silver cross surf for my oldest.
While we wait for lockdown to be lifted, and shops re-opened, why don't you rowse here on mumsnet & other forums, see what other mums recommend, have a look online, read users reviews, check ones within your budget. It'd give you an idea (or a rough idea) of what to look out for in the shops when you eventually go for test drive.
Also, i find 3wheelers easier to manoeurve.