As a non-techy type of person with limited ability,

Using two computers (A with original the wallet and B with a freshly installed wallet), both running on Windows, copy the [Electrum] folder located in the [Roaming] folder on Computer A to the [Roaming] folder of Computer B, overwriting the the fresh wallet's Electrum folder with the original wallet's Electrum folder.

• On Computer A, open the Electrum wallet and turn off automatic-connect and manually select a server running Core BTC. Would this effectively make the Electrum A wallet a Core BTC wallet?
• On Computer B, open the Electrum wallet and turn off automatic-connect and manually select a server running Unlimited BTU. Would this effectively make the Electrum B wallet an Unlimited BTU wallet?

Well, would this be enough to split the two coins?  But what about Replay attacks - how could they be prevented in this scenario if this approach is feasible?

Or, should I just simply send my BTC to an exchange shortly after a hard fork and let the exchange do the coin splitting etc. for me?