Oh, and yes on the fees you would greatly benefit (I recall it's just 100baht per transfer), however, Krungsri exchange rate to USD was never optimal (BBL is usually the best ).
I've been able to transfer up to 150k via Krungsri (Swift transfer). It's probably your default account transfer limit in which case you will only be able to increase it by visiting your branch in person. Anyways, give it a shot, they may have changed the rules by now.