If you're serious, you should get a dedicated server, do the bitcoin core and lnd or core lightning integration. This is on the range of 150k sats per month. I'd say it's definitely feasible and if I were doing any kind of lightning app at all I'd run a node.

On the revenue side, perhaps it's better to start with something that people will pay for. That'll help build the circular economy much more than another bird feeder (nothing against them, I loved feeding the chickens).

Often people want to get into mining and the common reply is that you should just buy. In a similar way, if you have experience building profitable SaaS then just accept bitcoin lightning and pay attention to what your sats-paying customers are asking for.