A transaction with 44.8 sat/B should probably clear most weekends, the fees had been dropping down to 5-10 in the last weekends. Sometimes even 1 sat/B transactions confirmed. This weekend the mempool seems pretty full, though.

AFAIK, MultiBit has an option to export private keys. However, MultiBit uses compressed private keys, while Electrum uses uncompressed private keys. Bitcoin Core understands either, so if you don't want to wait for the transaction to clear, you could install Bitcoin Core to clear them. This comes with a wait time though, as you'd have to wait for Bitcoin Core to synchronize with the Bitcoin network which can take a few days. If you're time-pressed, I think Blockchain.info does allow importing keys also, although I would just use it then to send your money to electrum, so that you only relinquish control of your own funds as briefly as possible.

A transaction with 44.8 sat/B should probably confirm most weekends, the fees had been dropping down to 5-10 in the last weekends. Sometimes even 1 sat/B transactions confirmed. This weekend the mempool seems pretty full, though.

AFAIK, MultiBit has an option to export private keys. However, MultiBit uses compressed private keys, while Electrum uses uncompressed private keys. Bitcoin Core understands either, so if you don't want to wait for the transaction to confirm, you could install Bitcoin Core to doublespend them. This comes with a wait time though, as you'd have to wait for Bitcoin Core to synchronize with the Bitcoin network which can take a few days. If you're time-pressed, I think Blockchain.info does allow importing keys also, although I would just use it then to send your money to electrum, so that you only relinquish control of your own funds as briefly as possible.