Sounds ok. Your stock thermostat should open and circulate coolant once the bike hits about 175 -180. But the fan doesn't kick on till 215 -220 on my bike. Then it shuts of once the bike has hit ~200. In the summer time my tempuratures are arond 90 -100 degrees outside. My bike consistantly runs around 200 -220 when it's that hot. That's fine. If you start seeing temps in excess of 230, then I'd start worrying why.
I said fan, cause SP1's only have 1 fan. Yours should have two.
John, 2000 RC51 #000100