Alternative wheelset conundrum

I currently have a set of Vision T42 wheels on my ‘best’ bike. I’ve had them for 5 years and they’ve always been great. In previous years I’ve alternated with the original wheels I had on the bike that I used when the weather was bad or it was very windy (the Visions are pretty good but when it’s really blowing across you do feel some force pushing you sideways).

I upgraded my groupset to 11 speed this summer and the original wheels have a 10 speed tiagra hub so are no use any more.

I’d like to get a set of lighter and shallower wheels that could serve for hilly and windy days. I’ve built a set of wheels for my CX bike using DT Swiss R460 rims and 350 hubs, which have come out really well with Schwalbe s-one tubeless tyres on. So I’d like these to be tubeless too.

My initial thought was to build a set of DT Swiss wheels using RR411 20h/24h on 240s hubs - these would be under 1500g, but I’ve been told they’ll be quite flexible (I weigh 85kg). And the build cost would be around £500 for the wheelset alone, plus skewers, tyres, tape and valves.

Alternatively I was thinking of the Fulcrum racing 3 two way for, I’ve seen some quite good pricing for these, though they are a few years old so have a 15mm internal/20.5 external rather than the wider 18mm internal of the RR411. However for half the cost roughly I think that’s an acceptable downside (they’re only 60g heavier too).

I want a set of wheels that aren’t too wide - ideally the same (21mm) external width as my visions with an aluminium brake track - then I can change quickly without having to mess around each time.

Has anyone any experience of using the fulcrum wheels with Schwalbe Pro Ones? Should the fact they are a few years old put me off?