3)I noticed the transaction fees with the wallets I looked at are quite high. Is there a software wallet (not mobile only though - I dont trust smartphones

) which lets you actually chose what you are willing to pay? (I totally don't care if my transaction takes a few days to get picked by a miner and processed.)
Thanks in advance!
Someone sayed already, electrum have very good fee system. you can adjust it as you like, very easy to do so.
Sadly not many wallets allow easy to setup fee's, even without security measures like blockchain.info did. Absolutely no protection against mistakes like sending fee with fee as real amount people wanted transfered.
So people sent 0.01 btc with 5 BTC fee etc.