I have the private keys for multibit HD. Will that work out for me well?
Probably not. MultiBit HD does not allow you to choose which nodes you are connected to so you won't be able to choose which chain you want to use and transact on. It does not provide the (slightly) advanced functionality required to split your coins either.can i move the priv keys to another wallet with ease?
yes , but it depends on another wallet
the key point to be ready for the fork - prior to the Fork-day have your BTC in the BTC address to which you have the privkey, no matter which soft you use to access the address.
Than, after the fork happened, just import your privkey to the clients/wallets of the new blockchains.