All Legends No Eternals
While I’ve found that HP is reachable via bloodmagic and using MP affixes, I’m not sure about that power value, even if you’re were using 72% PLT + 36% Glasscannon (it is capped at 40%, js), since that HP will cost almost all your set and crystal slots.
500k HP is really pretty easily via HP affixes and I can’t argue about it, but I guess you have less power than you could have.
I guess I’m a bit exagerrated about the “300k HP” with 1700 Power. BUT I really did it before. 
210k HP with 1700 Power via Wizard
Empower
7x ED+ plus 3 for Eternal (MH, Neck, Pet)
PtL x 3 plus 1 for Eternal (Neck)
GC x 2 plus 1 for Eternal (MH)
BloodMagic Mythic with All Mana Based Set Affixes… (SpellSword, CV, AD, CP, Satyr’s, or Scroundrel)
Pet (Satyr’s) with +15000 MP, 50% TMP
I use it once but never again because of its weakness when facing aggresive players. 
Not exagerrated, I found it is possible. Also, I found “power” formula and can finally say you’re right, it is possible reaching 1700 power with set you described.
i have a warrior 300k+ HP and 1.2K power in PVP…
i try to build that in Wizard and that set affixes but my HP is going down only the power reaching 1700k+ @marwinberna what other affixes so that the HP come up in to 300k+ with this items and set affixes that you said?
you remember the name? i used the same concept of high hit freq and lots of procs. maybe you fought with me.
Not sure. I may remember but I forgot now.
I’m using 3 Eternals that time. I’m going to revive that build soon I’m just recently reviving the 3.0 Summoner Build.
but the HP of this build is 300K or not?
I made a build like this before with 200k HP and 1600 - 1700 Power.
In my unlimited “IT” can be to make a build like this 300k HP with 1700 Power.
I know I’m a bit exaggerated about “IT CAN BE” but who knows. I will try to reach soon after I made the build I’m doing right now.
EDIT: (unlimited imagination)