For example, has the coice of node on Electrum (ACINQ vs. Electrum trampoline vs. trampoline hodlistreco) any effect on future fees paid?
Yes, it depends on the route that your payment had to take to reach the receiver's channel.
The total fee depends on the number of channels that it went through and their respective routing fees.
The more expensive channels that it need to hop into, the more fee that it'll accumulate.
The sent amount is quite high too, it may have been broken-down into multiple separate small amounts to send the full amount.
In terms of those hard-coded trampoline nodes, those have different connections to the lightning network
so it could be cheaper if one has shorter route to the recipient and has active channels to nodes with lower routing fees.
But finding which one will total a lower fee requires intensive research (
for the indications above) or testing.
Is there a way to minimize those fees somehow?
The only way I know is to open a channel directly to the recipient's node.
It's recommended if it's an exchange's lightning node where you would deposit and withdraw bitcoins frequently.
Usually, exchanges with lightning deposit/withdrawal option have a note with "
connect to our lightning node" message or similar.