Did you create the wallet and got those 0.5 BTC yourself?

Are those 2 separated wallets (different wallet ids and passwords) or the one with 0.5 BTC is like an additional/extra wallet that you created on the same blockchain.com account as the first?

But in the step 6 (derivation path), select “legacy” in the top and change the second 0 (from right to left) to an 1.

You could do a bulk export and bulk import, let the Bitcoin Cash wallet figure out which address holds any funds.

You don't need to import wallet.dat file on Electron Cash wallet, you only need to export Private Keys for addresses which has BCH and import them into your Electron Cash wallet.

here are detailed steps for how to claim your BCH :
https://bitcointalk.org/index.php?topic=2078292.0

Since you're running bitcoind on a server, I'll go with the short version:
1. Move your Bitcoins to a new address.
2. Export the private keys from the addresses that held Bitcoin at the time of the fork.
3. Import the private keys into the Bitcoin Cash wallet of your choice, and send them to wherever you want them.
4. Do the same for Bitcoin Gold and BitCore.
5. Never use these addresses again.

Whlie doing this, use proper security measures. Only export private keys after the addresses are empty, don't unstall untrusted software on your normal computer, don't enter private keys into random websitse that promise to really give you your fork coin, etc. MAKE SURE you don't send Bitcoin to Bitcoin Core addresses, or the other way around. You're very likely to lose your money at exchanges if you make this mistake.

This is the short version, if you have any more detailed questions, just ask

One other suggestion for you to reduce your fee, if possible try to a have as few transactions for acquiring your coins prior to your use.  This will reduce the size of transaction.

First off I would recommend upgrading Bitcoin Core to latest version 0.15.1 as you are well out of date there.

As for the fees you can see the current state of the network and calculate an appropriate fee using the following sites:

https://bitcoinfees.earn.com/
https://jochen-hoenicke.de/queue/#24h

If you are not in a hurry and don't absolutely need to get confirmed in the next block I would ignore the recommended fee. For example this morning bitcoinfees.earn.com was recommending paying 310 satoshis per byte but looking at the data showing what was in the mempool I used 8 satoshis per byte and only waited 38 minutes for it to confirm.

какие нахрен 50 копеек? Сборы $ 52.38 ты прежде чем писать смори внимательнее куда пошли $ 0.58
modelski у тебя в транзакцию входят 6 входов и из за этого получается большой размер транзакции в следствии чего больше приходится платить за транзакцию, если бы у тебя был 1 вход то и размер транзакции был бы меньше и платить пришлось бы меньше
вывод: чем больше входов тем больше размер транзакции, тем больше нужно платить