Mac proxifier to use with Transmission?

Question

I am attempting to route just my Transmission traffic through a proxy instead of all of my traffic through a VPN. My attempts at getting this to work:

1. Attempting to just route Transmission traffic through the VPN. I could not figure a suitable way to do this...
2. Attempting to use OS X Server's Application Layer VPN. Seems like nobody knows how to set this up (myself included)
3. Switching to uTorrent... and subsequently switching back to Transmission.
4. Setting a local port that connects to the proxy, then telling transmission to use that port. I couldn't get this working because I couldn't figure out how to route all transmission traffic through a single port.
5. Using proximac, but it does not support an authenticated proxy server.

After realizing that none of these solutions worked well, I then found this recommendation, suggesting to either use a paid solution or torsocks. Since I'd rather not shell out $30, I figured I would give torsocks a shot. I managed to install it with brew, then modify the following variables in torsocks.conf:

TorAddress
TorPort
SOCKS5Username
SOCKS5Password

Doing something simple, like attempting to open up Firefox (torsocks open -a Firefox), results in the following output:

[syscall] Unsupported syscall number 427. Denying the call (in tsocks_syscall() at syscall.c:165) ...

And then Firefox crashes after opening. Trying the same with Transmission has similar results, and returns my IP address instead of the proxy server's after looking at ipleak. I think this might not be working because I used the SOCKS5 proxy's IP/port for TorAddress and TorPort and the proxy itself isn't a Tor proxy (I might be incredibly wrong about that).

Regardless, I am unsure about how to effectively use torsocks with Transmission. If there is a more suitable solution that will allow me to either use a proxy with Transmission or just route Transmission traffic through a VPN, I would love hearing it (and would love saving $30 in the process).