Tour de France Betting

I'm considering a flutter on the Tour this year. I may as well try and take advantage of sitting watching hours on end of it!
What do you think of the following bets?
over 161.5 riders to finish - 4/5 (Betfair) from what ive seen the last five tours have finished over this figure.
Mark Cavendish to win 4.5 stages or more - 9/4 (Paddy Power)
Mark Cavendish to win points classification - 7/5 (can be taken each way with Paddy Power)
Robert Gesink to win the tour without Contador and A.Shleck - 11/2 but ill back each way so he needs to finsh top 5.
Millionaire or stick to the day job?........
What do you think of the following bets?
over 161.5 riders to finish - 4/5 (Betfair) from what ive seen the last five tours have finished over this figure.
Mark Cavendish to win 4.5 stages or more - 9/4 (Paddy Power)
Mark Cavendish to win points classification - 7/5 (can be taken each way with Paddy Power)
Robert Gesink to win the tour without Contador and A.Shleck - 11/2 but ill back each way so he needs to finsh top 5.
Millionaire or stick to the day job?........
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I am a fully qualified betting shop manager so it may be an idea to ignore me as we tend to be the worst tipsters.