I haven't done that myself and there may be other users who can guide you better, but I think you should have a good chance of connecting to at least one node that has enabled full RBF and your transaction being propagated to the network.
You can manually add other nodes which have enabled full RBF to ensure you get good propagation. Peter Todd's nodes are probably a good place to start:
https://petertodd.org/2023/why-you-should-run-mempoolfullrbf#full-rbf-peeringNote that if you don't run your own full node, then probably blockstream's block explorer will accept Full RBF:
https://blockstream.info/tx/push (connect there via Tor).
mempool.space definitely accept full RBF replacements for propagation:
https://mempool.space/tx/pushhttp://mempoolhqx4isw62xs7abwphsq7ldayuidyx2v2oethdhhj6mlo2r6ad.onion/tx/pushThat being said, I don't know if the Electrum server ignores policy rules, or if your Electrum client will allow you to do that.
Electrum will happily attempt to broadcast any full RBF replacements, but whether or not it does depends on whether the server it is connected to has full RBF enabled or not. If it does not you will be shown an error, but you can easily just manually swap your server until you find one which will accept your replacement.