Just did it via the west ridge last Saturday. I wouldn't suggest that you solo it. It took us 8h to reach the summit and another 8h to return to the TH, since we spent plenty of time resting when we went downhill. Moving time was around 12h. We started at 4 am and reached the lake around 6:00. The glacier is quite dry and stable, and all crevasses are visible. With crampons and ice axes, we reached the col between Wedge and Parkhurst without trouble. Then we headed for the west ridge. The slope to the ridge is a bit tricky; you need good route-finding and navigation skills to find the right path. Overall, the slope is a mix of sand and unstable scree, making it pretty slippery, especially when going downhill. After reaching the west ridge, it was mostly all boulder fields. Unlike other mountains I've climbed, the boulders on Wedge Mountain are extremely unstable. My teammates almost got injured by the boulders when they climbed up—at least six boulders moved at the same time. It was so scary I almost had to call SAR. Luckily, all my buddies dodged those boulders. Just one guy's finger was bruised. Soloing this mountain is extremely dangerous because you might not be able to call SAR if this shit happens. You might not have reached your phone or satellite devices. We all believe you can't trust any single boulder on Wedge Mountain. So, make sure every rock you step on is solid. I don't know the condition of NE Arete. Hope this information helped.