I've been perfectly sated with my AC1900 since I bought it. Probably a little bit above what I really needed, but I have had absolutely no issues with it so we will ignore my tendency to overbuy tech.
I myself am hopped in from a college network again... last time I was in college there were jokes about GW2 being vaporware. Gone back to try and nab up a MS. Working full time and going to school part time is proving to take up just as much of my free time as I thought it would. All of it. Womp. Barely have time to work on the board games.
Necromancer is easily the easiest fit here. If you run a spectral build you are tanking more damage in death shroud than not and your health pool itself is already massive. You can also run primary wells pretty well solo and reaper changes it up as well.
I've been solo playing necro and ele since release primarily and the amount of punishment my necro can take over the ele is quite notable.