--snip--
So for me that i ll open a channel for payments (i dont need it right now) i can do it with 12sat , right?
Seems that at this moment, the mempool is not as full anymore... You could even get by with 7 or 8 sat/vbyte i guess.
The main thing to remember: opening and closing channels happens trough an on-chain transaction. If there's a fee-bidding-war going on because the mempool is overflowing, you'll pay a lot to open and close a channel. If the mempool is (allmost) empty, you might get by with a 1/2 sat/vbyte tx. This has nothing to do with the lightning network tough, it's because of the current size of the mempool (and the fees of the transactions in said mempool).
Once you have an open channel, you should be able to send funds allmost instantly with a very low fee... Even if they are routed trough other nodes. It seems my node usually ends up charging ~1,2 sat to route a payment...
Even if your payment gets routed over 10 nodes such as mine, you'll still pay between 10 and 20 sats, which is nothing compared to an on-chain transaction.
Wether it is worth routing payments is something completely different... I don't think i'll ever break even, but that was not my intention