I’d say it depends what the road surface is like on the crits and races you do, whether you’re likely to be racing in the wet, and whether you will also be using the wheels for training or just for racing.
I think on a decent, dry road surface, 25mm tyres are still great and maybe still slightly faster than 28mm. On the basis that they’re a little narrower and lighter. And probably opens up more rim options for you as there are more and cheaper options (including secondhand) which are optimised for a 25mm tyre (I.e. ~28mm outer rim width like the Shimano Dura ace wheels). Also worth noting that 25mm performance tyres tend to have better availability and pricing than 28mm. But the rougher and/or wetter the surface the more you’d want to go wider for lower pressure and more grip, which for racing likely means a 28mm tyre and 30+mm outer rim width. I think 28mm right now is the optimal width for performance/racing across a range of surfaces and conditions. Very few if any performance wheels being optimised for 30+.mm. Though if you really wanted to go wider than 28 then a good compromise is 28 on the front where aerodynamics matter more and 30 on the back where there’s more weight and dirty air.
I haven’t ridden them yet. I’m building up this bike for the winter and we now have snow on the ground.
They appear to be very well made. Reviews online were pretty good when I did research. The biggest knock (road.cc) was that for a 1000 pounds you could do a little better for cheaper but I only paid $800 at bikeinn. The other knock is that they are on the heavy side. They use the same rim as the higher spec $2000 Cannondale Knot wheels but use 8 extra straight pull spokes. For me, as a 200 pound rider, I see that as a benefit. I really don’t need a 16 spoke front wheel to save a few grams.
I looked at every option at there and it’s really hard to find a rim wider than 30mm. The Zipp 303S would have been perfect (around $1000) but I refuse to be a hookless guinea pig on a road bike.
The narrowest I’d go is 28 mm. If you want to race, 28–30 mm tires should be the sweet spot, but you could even put 32 mm tires on there if e. g. the road surface is bad and/or if you need more confidence in your tires to rip it in the corners. I don’t see any point of putting 25 mm tires on a wheel these days.
As for rim width, for crit races, I’d go deeper than the goldilocks depth of 45ish mm, probably 55–65 mm. Those should be great for road races, too, unless it gets very windy.
3T makes wheels with rather wide rims, for road they make the Discus 45|32 with 32 mm external width. They also make a gravel version that is 40 mm wide.
Sure, they last until you crash or the spokes just start breaking with a frequency that gets super annoying. It still doesn’t change my opinion about $2000+ wheelsets and my need, or lack there of, for bleeding edge performance.