Personally, I think you should look at your level of commitment to it. It would be a shame to spend 2500 bucks for two then kind of let it die out. Something that seems to be pretty common for everyone.
In the mean time pick up a decent bike fitted to you. Then see how long you go for. For a road bike. I did not notice a large difference in weight, going from an older bike to a newer one… I only could tell when i picked it up.
I did notice having the integrated shifters… was very nice I would highly suggest them