You can always do fewer and you can set low fees to help reduce that as well. Maybe 100K for your use case?
I am also considering 1 mBTC. This is quite a large number for gaining BTC from simple apps or games. I looked and the fee on fixedfloat is quite low if I would like to do a swap from LN to onchain. Miner fee is also currently not high and oscillates around 2-10 sats/vB
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