Mr.Hitesh
If you take rasis, the placements are as you have given. We have to take the chalit or bhava chart.Then the placements of Sun and Mercury are in Leo, the 7th sign from Lagna.
In this current Venus dasa, you will be happy and come out of disappoints, if any.
In the Sun dasa also, you will enjoy good results even though Sun is in the star of Venus in 8th house (tensions,unexpected events) and sub of Mars in 11th house(fulfilment of desires, success)