Fahrenheit is not a good rush card, since its power increases with time AND its initial power is quite low. It can deal some damage, but most of the time a dragon/seraph would be better as a hitter, you don't need to save quanta for it to build it up and it is instant damage. (Both weapons and low HP creatures are as frail as each other in this environment anyways. But vs lv3... that's another story.)
If you strategy is stall and accumulate power, the bolt/fahrenheit build would work, but if you wish to rush with precogs, getting as many cards out early as possible is the key. You might like to try immolation rush, but they kinda suck without
mark.
Well... I'm not saying that precog splash sucks, but instead of thinking that it can really speed up the deck, consider it as a deck size trimmer. You are giving up your mark to reduce deck size to 26 in order to make draws consistent. Is it worth it? Depends on the deck.
Really can't give much advice here, as unupped precogs are only 50% as effective as upped ones.
Well, but a card-hitter spam with sufficient pillars might be an average deck at least.
wont work as it is, you need the bolts as part of your win condition, but if you dont spend them as CC you lose to pretty much any deck with a decent number of critters, therefore losing a lot of kill power and probably any chances to win. just take out the precogs and put rage potions to avoid spending bolts as CC
if you want to make a 
duo, i'm sure you can do better than this
Whether additional CC is needed or not depends on his purpose for this deck. For pvp, it would definitely need more defense.
