Where did you find the odds? I have checked Nitrogen, Betcoin and DirectBet. The odds are much worse than yours. Would be interested because 0.5 goals in first half @1.4 seems pretty good risk/profi ratio.
Schalke vs Leverkusen will try my luck on the game mentioned at the start. I will mange this bet by taking over 0.5 goals for first half @1.40 odds which is most profitable and highly possible winning option. Both teams to score yes @1.72 for full time results. Schalke at home is capable to achieve its goals but Leverkusen at away will not be easy target to get it down.