"I´ll keep my fingers crossed"
They are the same/ There´s no difference
"...six of one, half a dozen of the other"
"run-of-the-mill"
My first choice is
I hope you get what you want
I´ve done all I can do. Now I just have to wait and see for the answer
"...that might be a little overkill"
My conclusion is...
..."it´s just wait and see"
Tha might be doing too much
"...I didn´t want to take any chances"
I wanted to be sure
" I´ve got my heart set on"
Ordinary/common
"all in all"