Advice on PC DAW USB interfaces

Any PC Presonus S1 user in here have suggestion for decent quality multiple inputs (min of 8) USB/ADAT?

picked up a Behringer ADA 8000 feeding ADAT into my Apollo twin USB and it’s not really working well- i think it’s due to the Apllo not having a BNC or ADAT for clock sync.

Could i run another interface in tandem with the Apollo? Presonus 1824C is available reasonably priced but i’ve read some real problems with it - drivers etc.

Also would appreciate tips on a decent midi interface - if i went with a stand-alone for more ins/outs - so in that case i wouldn’t use the audio interface’s built in MIDI