That's a fairly easy task...
Your basic steps are fine... and it is good to see that you've done some research, enough to know that MBC's fees can be problematic!
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
You could do the following if you want to safeguard your BTC, before accessing the BCH:
1) Backup your private keys from MBC
2) IMPORT the private keys into an Electrum wallet (File -> New\Restore -> Import Bitcoin Address or Private keys - NOTE this is different from the youtube videos released by MultiBit devs!)
3) SEND the coins from your IMPORTED Electrum wallet to a different BTC wallet (I'd suggest a "standard" Electrum wallet)
4) IMPORT the keys from MBC into Electron Cash (
https://electroncash.org/#download)
You would then have BTC in one wallet... and BCH in another.
NOTE: At the current moment in time, fees are SUPER low, so it should be fine if you want to use MBC to send your BTC... I sent a transaction this morning with 1 sat/byte fees and it got next block confirmation!
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
Sorry to drag this up again.
Firstly, thanks for the info above. Really useful.
I finally got around to grabbing my btc cash from an old multibit wallet address. I completed steps 1 to 3 fine.
I then got to step 4 above. But when I try to import my private key into the electron wallet from MBC, the next button is greyed out. This a common issue? I'm guessing it has something to do with the way it stores the private keys?
Thanks in advance