I have used the moneroaddress.org website to generate a wallet, sent some funds using shapeshift.io
I kept my spend and view key, my wallet address and mnemonic.
All this was done offline except for the trade
I later used xmr check site to see the transaction went through and my wallet address received those funds.
If I wish to see my wallet balance later and restore it, should I use simplewallet?
Do any precautions need to be taken?