I think that Reynolds forks are pretty nice, low weight, nice curve, narrow profile and good handling. I like them more than my Enve 2.0 I think -which is almost too stiff.
reynolds made some forks with 1" steerer, of course you would be talking about a used product:http://www.ebay.com/itm/Reynolds-1-inch ... 3a7934c76b
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I dont think aero is dramatically important for your fork, you seem to have enough other requirements that take precedence.
Reynold did make an aero ouzo too.
But if you want aero (over light) why not get a custom steel fork to match your steel frame- I bet your builder will have fun with that and you may like how smooth and dependable steel forks can make your front end feel. TT bikes are rarely about weight anyway...
Check out Rob English - he is a custom steel builder who is a TT fanatic and likely has some cool ideas.
Are we going to mount your rear bake under the BB?
Are your front brakes being mounted behind the fork for a more aero profile?