Welcome!

Instead of using 10 preamps(!), you could look at the Mutable Instruments Veils. A VCA, but for sure you can pump line level to modular level with it. Maybe Intellijel's Quad VCA can do the same.

Maybe you want to go a different route with your modular within a few months. Then a VCA is for sure good to have. I doubt if 10 preamps are ;)

But if you want 10 preamps, you can get three of these:
http://ladik.ladik.eu/?page_id=1143