I recommend soldering at high temperature (>= 350 degress celcius) - personally I use 400 and above.
That way you can melt the solder very fast and put your wires by just tapping them onto the pads in less than a second.
The problem with low-temp soldering is, you need longer to heat the pad up and therewith you run the risk of displacing the pads when putting your iron for too long on the pads.
Personally I put some solder on the pads and wires first - let the board getting cooled down and then solder the wires by tapping them down onto the pads.
At high temp, you should avoid having your iron on the same pad more than 1 second.