I've used a time firestall before for fun and seen some in pvp2, in this deck you've posted you're
very heavy on
quanta. Also - generally you will find that using select cards from an element in-keeping with strategy is ultimately more useful than a large array as displayed in your deck.
Can see this is your first post and that you're new, have you heard of pendulums? I'll leave it to you to look at them but they are very handy for balancing quanta generation in duos.
Also there is a deck image tool on the forums, it looks like a stack of three cards on the posting screen. You can click that button and add the import/export code of your deck inbetween the ]['s to get a quick easy deck image in this format.
The key to a successful deck is not really about large or small decks - the larger the deck the less chance of drawing the cards you need - the smaller the deck the less substance there is to the deck - it's about finding the optimum balance where all the cards needed for the deck to perform best are there, at the lowest bound to achieve it. A lot of the time this is a 30 card deck (because there is a high value of benefit to having the smallest possible decksize in a lot of strategies.) As you spend more time on the forums you will find that there are decks in a variety of sizes - with some of the best decks being at both the larger and the smaller sides of the spectrum.
Welcome to the forums, have fun tweaking your deck.