are these going to be a race ready wheelset or a street wheelset? like tejanotrackie said, those may not be suitable for the street. the reason why i say this is because i'm building myself a set of race wheels using a very similar set up consisting of: low flange DAs laced to mavic reflex hoops. as far as your question regarding spokes, i'll be using sapim lasers and nipples.
for race use, the gels and reflexes will hold up fine. i've heard and known people using both on the road and having them crack for commuter use. but your results may vary.