[Closed] How light can Hope wheels be?

I'm going to treat myself to some new wheels for my Superlight, and have always had Hopes. I currently have some old Hope xc wheels with 317s and some newer 20 mm Pro IIs on wtb xc rims, neither of them have are particularly flash and both weigh about 1.8kgs. New fork needs 15mm hub hence new wheels ( I still need the 20mm for another bike).

What do you reckon would be the best/lightest xc wheels that could be put together using pro IIs without totally compromising strength?

Are there other hubs/wheels that can be easily converted that I should consider?