Would this path work:
1. Only one localbtc to buy coins.
2. Send from localbtc to bc.info Wallets A and B
3. b.info Wallet A sends to Electrum A
4. b.info Wallet B sends to Electrum B
Would electrum A and B still have linkage due to the original localbtc wallet?
Yes, albeit a weaker one since there's an intermediate transaction in between.
What would a better method be?
I thought that when you transfer btc to and from a web wallet, such as blockchain.info, the coins that get transferred out are not really the same ones you put in. They are a random bunch of coins from the pool which blockchain.info is holding ofr its users.
Wouldn't that mean that the coins coming from bc.info A and B would not be related to the original localbtc wallet as they are not actually coins that came from there.