I highly recommend you to have both incoming and outgoing liquidity - this means being able to send and receive sats

lightningnetwork.plus or amboss.space

Personally I recommend you to look at https://lightningnetwork.plus/swaps - this will allow you to get in+out liquidity. Triangular swap is good to start with. Also, it is fine to start as low as 100k sats - if you will need to increase it you can open new channels to different nodes you, preferably ones that are not reachable in 1-2 hops from you to enhance your hopness metric.

For my business I am operating this node: https://lightningnetwork.plus/nodes/02f16437c2b9bf9f38bc4a57d7f32d7c36633725392cebf1faadea11b4ea855a7b