it's a good combination that will maximise the performance of the HF inverter, which is most efficient at higher voltages and higher outputs. It probably will limit the output below the peak output it might have briefly achieved, but as panels reduce their output significantly as they warm up, and after inverter losses etc I doubt this is going to result in more than a 0.2-0.3% overall reduction in output, which is probably more than made up for in the efficiency improvements on the inverter.
SMA do have a bit of a gap in their range around this level, with either the 3000HF or TL, or the 3600TL being the options. The TL range would probably have needed the strings to be split to 2 x 7 panels though as they have a lower voltage range, which would have significantly reduced the efficiency, probably below that of the HF as specced.
It's certainly well within the manufacturers recommendations anyway. Hope this helps.
