I think that present tense can work really well. Most readers prefer to read in past tense (mostly because that's what they're used to). But having short sections in present tense can be very effective too.
It's hard to tell how this piece fits into the rest without seeing more of it. If you're intending to have short sequences in the longer narrative in present tense (as you seem to), then it should work fine. I'd suggest putting up more of the prologue/first chapter to give us some context to work with; then we'll be able to give you more accurate feedback.
Hope that helps!
~Kess / Mel