I don't think its too Biblical, its rarely used so isn't very common. I have heard people use
Cain or various spellings of
Cain way more often and all I can think is "you named your kid after a murderer?" so I much much prefer
Abel.
The only problem that I can see is the Able
Abel confusion. I suggested it too my husband as a possible name for our baby and the first thing he said was " are you able
Abel?" which vetoed it for us.