I've been meaning to do a larger write up of my experience once I hit 1M sats in fees.

I run the node Prince, https://1ml.com/node/02644f80b5d32ed9a9888690571159692a17d7ead7db2df5124a8e2a72a8447d30

I am currently ranked 8th on the BOS rankings (https://fulmo.org/bos-score.html) and 12th on lightning terminal rankings. I have 8-9 BTC on my node with about 110 channels (I have more incoming that outcoming liquidity, so that 8BTC is not my investment).

Top line numbers: Over the past 5 months have routed over 6700 payments worth over 1.7 billion sats earning me about 900k sats in routing fees; I've spent about 100k sats in on-chain fees and rebalancing fees. For those doing the math, that comes out to about 0.5% APR on my locked-up capital. Although my volume is steadily increasing and I may be able to get closer to 1% in the next year.

I have everything automated including fees and re-balancing.
-- I use lnd-charge for fees: https://github.com/accumulator/charge-lnd
-- I use c-otto's script for automatic re-balancing: https://c-otto.de/

Happy to answer more questions -- oh, and feel free to open a channel to me. The best way to get started is to open liquidity triangles with people (ie A->B; B->C; C->A). Happy to be a part of a couple here if there is interest. I do require a minimum of 5M sats for any incoming channels.