Not sure if you read though this?

"Is recommended to have at least 3 channels open in your Blixt, with 3 different peers, for redundancy of paths, but not more than 5-6. Having more than 6 channels on your Blixt will just add more loading into the graph and performance, will not help too much.

One with Blixt node (Dunder or regular) - for a good connection with other big nodes and other Blixt users.

One with a low fee LSP node - for cheaper txs and also choose one that is well connected

One with your own node (if you have) - for other liquidity movements and or privacy, also as redundancy of previous.

Is good also to have always activated the MPP (multi-part payment) in settings. That could help using multiple channels in one tx.

Always maintain these few channels with enough liquidity. You can anytime refill them based on your usage, with the swap services."