It might be 50 kg inclusive of the bar.
Keep an eye out at garage sales etc for more plates. You will be surprised because you generally press less dumbell weight than barbell weight so it probably wont be long before you need more weight.
Hey Beaver...look into a TRX...it's a great piece of equipment. For the amount that you will use it and it's effectiveness it's a great price. You will be very surprised at the burn it creates!
Hope that helps