RB14e to mini-pcie X86 scheme

Good day!

I got a plan to bulid a 1u x86 board on asrock QC5000-ITX/PH. As for ethernet card everything is clear - Intel® PRO/1000 PT Quad Port on a pci-e x4 slot (just tested - works fine), but for wireless networking i a lot doubts…

the plan is to use mini pcie x1 slot on mobo. it would be connected to mini pcie to pci-e x1 riser to rb14e card. (riser card with additional power connector)
in rb14e i wanna install two high powered wifi cards - r11e2HPnd and r11e5HacD

Is this scheme alright ?

thanks for answers.