[Mahatma]

I agree with all your selections Beanie, i use a similar method and my bets this weekend were

Dundee Utd-Dunfermline <2.5 1.862
Falkirk-Kilmarnock Home -0.25 1.98
Hibs-Motherwell >2.5 1.787
Rangers-Hearts <2.5 1.88
St Mirren-Aberdeen <2.25 1.926

You could add conditions to your spreadsheet which will adjust the percentages slightly. They could be

fatigued (if game played in last 3 days) = 0.05 less goals
no pressure (if end of season is near and team is clear of relegation and can't be promoted) = +0.1 goals
relegation dogfight (two teams who are only a few points off relegations and are likely to play a safe, defensive game) = -0.1 goal

and so on. I haven't done any work finding out what effects pressure or relegation battels have so the above is a guess.