Tubulars are not 100x better on the road. They are lighter (rim and tire), rims are usually stronger, and you can ride them if you flat. however, they are more expensive and more of a pain. Gluing tires is not a huge deal, like anything else, you get better at it and it will become less messy

If you can deal with the extra cost and maintenance, go for it. Otherwise a nice carbon clincher with a Pro3 will be just as good