Here's the decklist: http://deckbox.org/sets/697245

The goal is to:

- Lay an early threat
- Protect it and control the board (with control spells)
- Win in one or two explosive turns (with aggro spells)

I'm look to stay somewhat budget, which is why I don't have Snapcaster or Vendillion Clique. Any tips? What should I add/remove?

This looks alot like most RU Delver Tempo decks so you could look there for more general advice. You seem to have a touch too much Card Draw (IMO). Think about dropping the sleight of Hand or the prob for more utility/support options for Delver and Pyromancer. Likewise Im not entirely sure if you can really protect the delver too much to make sure it sticks.