Genuine brokers. Not counterparty market-makers.
In case you're unfamiliar with these terms, a genuine broker is someone who executes trades on your behalf in the underlying market (in the case of forex, that's the interbank market): they're simply providing a service in exchange for a commission. They're not themselves directly involved in the transaction and have no incentive for their clients to lose. A counterparty market-maker is someone pretending to be a broker who actually holds the other side of his own customers' trades, while also holding their deposited funds and both making up and interpreting all the rules governing every trade.
I don't know what size fund you'll be trading with, to be withdrawing $200,000 per month, but obviously many millions, at least.
You might want to do a little research about the previous business history of Oanda's owners, what happened to their last brokerage, what happened to their clients' money, and so on, before entrusting many millions to them? Just a suggestion!
I'm extremely surprised to see someone who will clearly be depositing many millions contemplating using a counterparty market-maker as a broker. (Unless you're envisaging that you'll be able to withdraw $200,000 per month regularly from a broker without depositing many millions? In which case the whole conversation isn't worth having ... ).
Suggestion: Interactive Brokers (they're genuine brokers: your dealing-costs there might also be far less than they'd be at Oanda).