With your level 2, 3, and 5 choices you’re missing out on three of her best skills: Phase Distortion, Crosscut, and Blade Sweep. Tanking Phoebe sounds great in theory, I had this exact idea during the CTT, but in practice it detracts from her role as an assassin. Even if you prefer a tanky brawler to a high DPS assassin, don’t not take Phase Distortion at level 2, never pass up CC and especially not a six second heavy slow.
For this build I’d suggest max health and shield capacity to keep with the tanky brawler theme, but I wouldn’t recommend using this build in PvP, Attikus is an example of a tanky brawler and even with a full DPS build/loadout on Phoebe he can still 1v1 her, maybe give him a try I think he’s more what you’re looking for.