Approach via Esmerelda is flat, but long. Like 12 miles long, if I remember correctly. You pretty much hang a right off the trail, go up a meadow (I'm sure there is a trail) and into the Cool-r.
Long's Pass is sucky, but it's much shorter than Esmerelda. I've heard of people making the long trip along Esmerelda easier with bikes, but I don't think that is legal.
I don't think the Asscadian Cool-r needs a topo. The picture in the Becky Guide will get you in the correct choss gulley, follow it to the shoulder, then take the easiest scramble to the top.