[Andyrondack]

Hello, I only play steel strung guitar but thought I would ask this here as classical players have to cope with a much more demanding repertoir.
When playing arpeggios at speed is it better for control and accuracy to allow the fleshy part of the finger to contact the string first and then follow through with the nail or just sound the string with the nail ?
I ask because I am trying to work up the speed of a jig called The Irish Washerwoman, the melody is mostly a few simple triads picked accross the strings with some strings played twice in succession, there is no opportunity to use the fretting hand to sound notes via hammer ons and pull ofs so the picking hand has to do all the hard work. Strugling to play cleanly much faster than 100bpm at the moment.
Thanks for any comments.