I can't find any ecash wallet that isn't web wallet or centralized wallet please if you are mining ecash kindly share me the wallet you are using I have an ASIC that I can use to mine as many as possible ecash coin.
If you have been following Bitcoin for a while, a hard fork has taken place to produce BitcoinCash, which also had another hard fork BitcoinCashABC aka ecash.
Electrum wallet is an open source wallet and has been well reviewed, but ElectrumABC
[1]'s version has not been reviewed like Bitcoin version, although it is open source and looks good in general.
you can also try
https://viawallet.com/ which is another good option.
about Mining it you can read this ---->
https://bitcointalk.org/index.php?topic=5144362.msg57585522#msg57585522 or PM @
philipma1957 he has previous experience with mining it and may help you (be nice when asking)
[1]
https://github.com/bitcoin-abc/ElectrumABC/