Lacing the first took me a bit over an hour, the second only took about 30 minutes. Trueing was the tricky bit. The front wheel went in first and only needed minimal adjustment. I was being super cautious with it though and got it within 0.2mm after about an hour. Rear wheel was trickier. Spent an hour on it one evening and every time I seemed to get one area sorted it would mess up another. I was getting frustrated so left it until the next day. With a clear head I got it to within 0.3mm within half an hour or so. I'm a bit worried about tension, but each spoke has the same 'pinging' tone, so will try it and see!