Yes a few different options.
I agree with others that if your baby is likely to be premature, the multi stage car seats are not likely to give you a good fit. You'd be best off with either one of the carry seats which has a good fit for smaller babies - agree with the avionaut seats there, and Britax Baby-Safe series may be good and maxi Cosi pebble. But avionaut really is the top player in this category. I'd actually have a look at their website and see whether you have a stockist anywhere near that you can go and have a look at the seats because they are best demoed in person. All of these seats go into the standard "maxi Cosi" pram adapters.
The other option you might want to look at for the car is car carrycots such as maxi Cosi jade, Joie calmi, the Jané one etc. I think maybe Nuna also do one. The downside of these is that it's not really clear whether the safety of a side lying seat is as good as the rear facing seat (the companies all claim it is, but in reality, the crash test dummies are designed to measure forces on a rear facing seat, not so much for the sideways ones, so it's actually not that clear). Plus, these take up two seats in your car rather than one, and must be used with a base whereas many infant car seats can be fitted with seatbelt if you want to save money by not buying a base, or want to use the seat in another car. They are heavy and not as portable as the carry seats, for example you can't easily put them on a supermarket trolley, which might make shopping as a single parent tricky (supermarket deliveries are great).
The benefit of them is that they lie much flatter than any car seat and are better for breathing etc for newborn babies, especially premature babies. They can also often be used as your main carrycot on your pram.
In terms of the pram choice again lots of options which can be boiled down to really three categories.
Lightweight, quick fold, ultra compact. These are good if you live in an urban environment with lots of going between car and walking or public transport, if you want to travel a lot, if you have a small car boot, small house, flat etc. However they don't handle rough paths very well and they won't stand up to a lot of heavy use such as hanging shopping on the handles etc. They also tend to be less protective for a newborn so you might prefer to use a car seat or carrycot attachment or even a sling for the first few weeks. They tend to be facing out only. Some are two way but these might be a bit more gimmicky and prone to wear and tear. Not all of these buggies lie flat or take a car seat/carrycot so if you want this you'll want to look specifically for models that do.
Two way 3 in 1 type pushchair - this is probably the most common type spanning the widest range. They usually consist of a frame onto which you can insert a seat unit either parent facing or world facing, a carrycot or a car seat. Sometimes different adapters are needed for either. They have a bigger shopping basket than the compact ones. Sometimes they have two sets of adapters so that you can potentially add a second seat to convert it to a "double decker type" sibling pushchair. You can go cheap here and get a decent one for around £3-400 such as Joie versatrax (this might be an older model now) or Cybex balios S Lux, or you can veer into premium and look at things like the uppababy vista which will probably cost over £1000. There are also lots of fashion or budget models in between these of varying quality. Sometimes the seat unit itself cleverly converts to the carrycot. Other times it's a separate item and you may be able to save by not buying it if you don't want it. These prams are often sold as bundles with loads of things thrown in but that can artificially inflate the price. If you want this type, be sure to know what extras you actually want and whether it's cheaper to buy things separately. If you go into a baby shop to look at prams you'll absolutely be taken to this section.
The benefit of the 3 in 1 types are that they claim to be one pram for all the way through to preschool where you usually stop using it. In reality, they can be bulky and awkward compared to a compact one, and the seat is often not as roomy as a workhorse type. They are worth looking at buying second hand because you can find them in quite good condition. I have had one of these I used all the way through and one that was too annoying so I ditched it.
The last type is what I think of as a workhorse pram. I'm on a bus and about to get off so I'll post in case I lose this and come back.