Which Size to take?

[GYM JUNKY]

Hi, Solomans measured my legs and it works out exactly on a size 60, so I bought a Trek size 60, but the stem (100mm) is still too long and my back hurts..

Is it wise to take a size 58? Is it better to take a size smaller frame and then take a longer stem with the seatpost a little bit longer? or must I take a size 90 stem?

 

Personally I think a smaller bike will handle better...

 

Thanks

Marco