PoE Elementalist, Nova builds

Looking to improve my cold dot in terms of dps. I have a budget of around 10 div, any tips would be appreciated! pob:

Here is the current character. It's shock nova ignite elementalist: I also have kind of a"dream" POB that I came up while theorycrafting before actually making the character in game: The build works pretty simply, just map with shock nova by running into a pack or nearby and cast flammability + shock nova to ignite basically the whole pack. Clear supported by fire mastery explode and maven boots. For bosses I throw fire traps as well. I think I'm dying due to repetit

I'm liking the playstyle but I'm having a hard time planning on upgrades beyond better weapons/amulet. I also thought about switching to ignite vortex, using proliferation in the glove. The main thing is: What tips to improve my damage (I wanted to have something around 6\~7 million in guardians), and mainly, the movespeed (is it possible something around 120\~130%?). My current POB:

Leveling Tips Act 1 - 5 Rush Elemental Overload on skill tree, if needed pick up Health Mana nodes on right side of witch starter area, i go for life on top right first then branch left to templar area. Buy Minion damage / Infernal Legion support in Act1. Socket in Summon Skitterbots in Act 2. Also optional to level Spiritual Aid during leveling to boost both your and skitter DPS then respec out of it later. On lvl 28 equip 4L Vortex + Deadly Ailments + Cold to Fire + Ignite Prolif

Evening. It's been a pretty smooth transition from cold dot to vortex ignite in the mid game. I've got all my implicits set on boots and gloves. I'm 100 percent spell supressed. &x200B; I gotta level up (92 atm) but i'm getting my ass kicked in t16s &x200B; I think my issues lie with Block/Spell Block. I can't fit in temptest shield yet. &x200B; How to I get to block cap? I'm kind of at a lost on how to get there. Thanks for your advise. &x200B;