Upload & Sell: On
The 50/1.4 is a very good lens, but the 50/2.5 Macro is amazing. Chances are you won't be shooting the 1.4 wide open anyway, so just get a flash like the 270EX II or 430EX II as primary or supplementary light indoors.
Personally, I like the 50L if I want to shoot wide open or nearly so. So I have that lens and the 50/2.5 Macro as my main 50mm lenses. I have others in that range too, but those are my favorites. If I had to choose only one, it would be the 50L, but that's a serious financial commitment, usually after you have a lot of other important lenses.