My combined weight is 713lbs and I only have 40bhp and 31 lb/ft torque. In 2 years, 18000 miles of riding I have rarely found it wanting in acceleration, and certainly not during the first few months of riding. These days, occasionally, but only when I want to execute an overtaking maneuver.
I have no doubt you can accelerate faster than I can so why is it you feel this lack of power and I do not? You only been riding what, a month? But then you were complaining about a lack of power from the very first day, on the 250s in your training class. I think you also mentioned the lack of power on the GS500 from the very beginning and are now drooling over 1500cc bikes. It could be you have different expectations than me, but I get concerned when you start confirming to newbies that they will get bored with a 250. Out of all the contributors to this site I think you are unique in feeling this lack of power. Just something to ponder upon.
As mentioned, you do get used to the acceleration pretty quickly but that does not mean it is time to trade up. Carrying speed through corners has NOTHING to do with how much horsepower you have beneath you. My fat pig of a scooter can easily reach unsafe speeds for any corner. Learning how to take the corners quickly but safely with a good safety margin is where I have fun on a bike. Perhaps that’s why I’ve not felt a lack of power.