Two things:
1) The narration style of PbP doesn't lend itself well to DM/player interaction. It makes way more sense (to me) that Orsik would have healed you up before you entered combat. It's up to you...but he could have cast one or two cure wounds before you even saw the spiders.
2) While we are down to just 2 players and you two are pretty quick to respond, whadaya say we try a more traditional initiative order and actually go in order? It's up to you two. No matter what, Bertram starts off by readying a crossbow attack after Sarith uses Faerie fire, then Surana will be up. The order will be:
Sarith (1d20+2)[10]
Bertram (1d20+3)[21]
Surana/Drum (1d20+3)[20]
Derendil (1d20+1)[18]
Orsik (1d20+0)[14]
Spiders
Topsy/Turvy(1d20+2)[12]
Ezraen (1d20+3)[9]
Shushar(1d20+0)[8]
Eldeth(1d20+2)[6]
Edit: Sarith is starting off the encounter with Faerie Fire...so he is at the top of init.