Nice job cherry picking there. Difficulty is >4000 atm so it's one of the least at the moment. Looks like a large profit switching pool is bouncing around now.
WTM used a difficulty of 2856.112 for LUX, but we can change that...
Difficulty 3500 = $2.84
Difficulty 4000 = $2.49
Difficulty 4500 = $2.21
Difficulty 5000 = $1.99
Are you going to stick with your comment "One of the least profitable coins to mine currently.." ??
Here's the status of the network recently to help you make up your mind...
[2017-11-02 13:20:22] phi block 35506, diff 4705.59, net 222.09 GH/s
[2017-11-02 13:20:54] phi block 35508, diff 4705.59, net 222.09 GH/s
[2017-11-02 13:21:46] phi block 35509, diff 3264.00, net 143.05 GH/s
[2017-11-02 13:21:56] phi block 35510, diff 2564.19, net 115.93 GH/s
[2017-11-02 13:22:56] phi block 35511, diff 2913.16, net 133.11 GH/s
[2017-11-02 13:23:36] phi block 35512, diff 2913.16, net 133.11 GH/s
[2017-11-02 13:26:15] phi block 35513, diff 3110.83, net 139.18 GH/s
[2017-11-02 13:26:25] phi block 35514, diff 2956.83, net 135.10 GH/s
[2017-11-02 13:27:25] phi block 35515, diff 2956.83, net 135.10 GH/s
[2017-11-02 13:28:05] phi block 35517, diff 3244.06, net 149.82 GH/s
[2017-11-02 13:28:37] phi block 35518, diff 3418.56, net 161.35 GH/s
[2017-11-02 13:28:47] phi block 35519, diff 3712.46, net 179.16 GH/s
[2017-11-02 13:28:59] phi block 35520, diff 3712.46, net 179.16 GH/s
[2017-11-02 13:30:39] phi block 35521, diff 3712.46, net 179.16 GH/s
[2017-11-02 13:32:18] phi block 35522, diff 4087.12, net 192.90 GH/s
[2017-11-02 13:35:02] phi block 35524, diff 4087.12, net 192.90 GH/s
[2017-11-02 13:37:56] phi block 35525, diff 3854.26, net 170.66 GH/s