If you had a digital recorder like the Tascam 2488neo($600-700) or one similar, you could run 8 channels through it, using it's preamps, record 8 different tracks and send a stereo line out to the PA.
After tracking you could load the tracks into your computer via a usb port and mix there or you could just mix and master in the Tascam. The killer is that 9th track you need. You might get away with just 2 drum mics, an overhead and bass.
This is exactly what our band does to record. We use the Tascam 2488 MKII with each member in a different room of the house (for isolation). All the mic cables feed back to the Tascam, which outputs to headphone amps for the members to monitor themselves/rest of the band.
Then, after we've recorded, patched where necessary (the beauty of using the multitrack recorder), and agreed that all of our parts are correct, I transfer the .WAV files for each track into CuBase 4 LE for mixdown.
I don't think it matters what multitrack brand you get, as long as it has enough channels to handle what your application demands.
If you don't have a place big enough to separate into different areas for isolation, perhaps a multitrack that only handles 4 simultaneous inputs would be sufficient. You could record the drums to 4 tracks first, then import them to CuBase. Either in CuBase or on the multitrack, you can mixdown those 4 tracks into a stereo pair for playback for the next instrument(s) recording.
Each time, take the new tracks recorded into Cubase, and add into the stereo mix for playback monitoring while recording.
A bit slower process, but just as good. Also, the nice thing about the multitrack recorders versus the PC recording, would definitiely be the reduced latency.
Good luck!
Swallow your pride and get recording straight to the PC! You won't regret it.