As a Bitcoin trader I can tell you for nothing that using cash and going to a trader is the safest option!However if you'd rather use Bitinstant I would do as Crooked's suggested and make multiple smaller deposits via different banks - if the commission is 5% for two lots of USD 500 then it will be less than the 7% required for USD 1,000 after all!I would recommend sending your BTC to Bitcoinfog - if you're feeling ultra paranoid create a new SR account and withdraw your funds from there to your real account too so they're run through SR's mixer as well.All the best,V.