"I suggest custodian wallets for amounts like 0.00069376 a year." Can I tell you more about this? what did you mean?
For example, my clients will transfer me let's say 60 rubles a month in total, this is 0.00005788 for a year this is 0.00069376
Because, you'll have to pay a fee that might reach 1/4 of that amount to spend that balance because you'll end up with lots of very small
inputs.
Transaction fee will be based from the fee rate (
which you'll set in the wallet) and the transaction's virtual size which will get higher if it has a lot of
inputs.
1sat/B is still good to consolidate them though.
Custodial wallets will just send from their hot wallet when you want to withdraw (
minus their fee which can be cheaper for low-priority).
LN is a very good choice however won't let you receive 'savings' from your 'clients' unless you have enough inbound capacity.
And you don't have enough to open a channel with 0.002 BTC then use submarine swap or spend some satoshi.
You need to find a way to increase your inbound capacity like mentioned in the previous sentence.
I mean that now I transfer over the real network first from a multisig wallet to two already existing LN. In the test network, how do I do that?
I don't get it.
But everything you can do with mainnet, you can do the same with testnet.