Forbidden Rites 11 PC/Frenzy theory crafting

Hi I've been quickly theory crafting this build for the past 2 hours and I would like some help in min-maxing it!

My thought process behind the build!I will transition into this build once I have finished my group play session.I'm not looking for a league starting build as I would have farmed enough currency to buy most of these gear so I want to min max the build more than it being viable as a league start.I'll play on softcore so I wanted lots of dmg compared to survivability.

1. Replica Soul Tether for corrupted soul just to get 20% extra ES
2. Ivory tower so that forbidden rite's chaos damage cost is converted into mana
3. Glorious Vanity with divine flesh (+5% max chaos res) for some survivability
4. Badge of the brotherhood with disciple of slaughter anoint for frenzy charges
5. 2 PC rings with life&res&veiled mana recoup
6. Scale chaos dmg/explody with large cluster jewels
7. Scale aoe and multi with medium cluster jewels
8. Born to chaos to get as high max chaos res -> can swap out for life triple multi jewels
9. Crown of the inward eye for the transfiguration's -> can go flat chaos dmg & +1PC & -12% chaos res & crit multi rare helm (if harvest doesn't get butchered)
10. Extra attributes requirements I will get from clusters
11. Malediction for assassin's mark & despair on hit gloves (corruption)
12. Might craft a battlestaff with +2 power charge
13. 3 passives voices for endgame add more crit multi jewels whilst keeping born to chaos jewels

POB: https://pastebin.com/9GQpJraV

Questions:

• Is there any flaws to the build that you can see?
• Idk what to use for gloves!
• I heard forbidden rites can only hit a boss with 2 projectiles. Shall I use a hydrosphere to add an extra target for the spell?
• What might be the best support gems for the build?

Edit: I don't have frenzy charge generation so I might swap out a pc ring for a precursor ring for frenzy charge on hit and take a rare glove with resistances.