I see the following different options:
1. range with built-in oven, plus CSO wall-oven, and speed wall-oven.
2. range-top (*), CSO wall-oven, and speed wall-oven.
3. range with built-in oven, plus CSO wall-oven, and microwave in the pantry.
3a. range with built-in oven, plus CSO wall-oven; no microwave.
4. range-top, CSO wall-oven, and small microwave in the pantry.
Without doubt, option #1 is obviously going to address all your cooking needs. It's most expensive and takes up the most space.
Option #2 is cheaper and uses less space. It still has most of the advantages. But it means you won't have a full-size oven. It depends on your cooking style. I personally would miss the ability to bake a full-size cookie sheet all in one go. Also Thanksgiving gets interesting; you can prepare a turkey in a CSO, but you might have to spatchcock it. All of that might be a non-issue for you. On the plus side, having a Speedoven is nice. It's not critical. But it's a fun tool to speed up cooking of some select dishes. And in general, having at least two oven cavities is awesome; and you don't often need them to be big if you have more than one.
Option #3 is great for most people, iff you feel you don't really need a microwave most of the time. We have little kids and expect that we'll need our microwave for a good while longer. But if it was an "adult-only" household, I might decide otherwise. There are few things that couldn't be done with the other appliances just as well. So, having to trek to the pantry and use the small microwave once or twice a month is probably OK. This leads to option #3a. Maybe, you'll find you won't even need a microwave at all.
Option #4 is the most extreme option. It means you won't have the benefit of two oven cavities. That's a noticeable limitation. On the other hand, you gain a lot of space, you save money, and with some forethought, you can still cook very efficiently.
In other words, we'd have to know a lot more about your budget, your available space, and your cooking style in order to give you the perfect answer. Sounds as if you don't know all of this information yourself, though. But you probably can't go wrong with either of these options (you might have noticed that they all include a CSO; go figure).
*) if you are looking into getting gas, do not get a cooktop. Look for a range top instead. You'll like it much better. On the other hand, if you plan on getting induction, then there are not that many choices of range tops; a cook top might be a better option.
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