Firstly if you plan to build your deck around a single card have 3 them in it. Even with the amount of cards search you have, it still makes it far safer. Also I think adding more Sinister Sabotage instead of No Escape as at 3 mana you usually want the versatility of "counter target spell". Also I'd take a look at your 1 or 2 off's and see if maybe you can take some of them out and instead increase the amount of some other cards. People often make the mistake of filling their deck with 1 off's which usually leads to a very unpredictable and chaotic hand(which isn't what you usually want). Although I am not saying remove all 1 off's, they can still be useful.

Also if you want to make a Standard legal deck the know that Izzet Boilerworks isn't standard legal

Thanks for the info, as I said I am grateful for any help people can give. I will try and get the cards you mentioned and add them, I have another Niv-Mizzet, Parun on its way to me so will get that up to three like you said. Thanks for the tip on Izzet Boilerworks I guess I should replace that with another Sulfur Falls

Update: I have added a number of cards that I needed in the way of a couple more Ral, Storm Conduit and another Niv-Mizzet, Parun and three more Opt and finally some more Sulfur Falls . I think its starting to take shape now but would once again appreciate any feedback