I've done the same before, but nowadays I'd look into uPnP since Tor has many costs to it. Slow transfer speeds, exit node data interference, and possible ISP throttling or attention are all potential downsides.
Bad nodes could not interfere with onion services because the onion address itself is the public key (it's E2EE). If you're using TLS to access internet services or just accessing onions you should be fine.
The more legitimate usage of Tor there is the better as it will attract less attention. This also helps Tor users who use it for privacy protection.
This isn't using exit nodes, though? Onion services are completely internal to TOR.
And many benefits, including privacy and resiliency.
> Slow transfer speeds
Not anymore.
> exit node data interference
No, Onion Services are safe.
> and possible ISP throttling or attention are all potential downsides.
No to both. Onion Services are not visible to ISPs or others.
This used to be case, but in my experience is no more. I'm routing all my traffic over Tor and don't feel slowed down the slightest.