Panic Attack: Four Days: Designing Encounters

Allegedly 4E is GM frendly in terms of game prep so I am going to give it a try.

Adventure: A spider nest in the forest is starting to attack a village.
So I am going to use Kobolds but "file the numbers off": Shifty becomes Jumpy; The javlin is replaced with a Spit attack. The +2 trap sense I'm replacing with +2 for stealth checks. Dark vision becomes tremor sense. So what does our Fell Spiders look like:

Fell Spider Minion				Level 1 Minion
Small Natural Spider				XP 25
Initiative +1				Senses Perception +6, Tremor sense
HP 1 a missed attack never damages a minion.
AC 15; Fortitude 13, Reflex 13, Will 13
Speed 6; see jumpy
Bite (Standard; at-will)
+5 vs AC; 4 damage
Spit Attack (Standard; at-will)
Ranged 10/20; +6 vs AC; 4 damage.
Jumpy (Minor; at-will)
The spider can shift (jump) 1 square and ignore terrain effect.
Alignment Unaligned				Languages
Skills Acrobatics +6, Stealth +6
Str 13 (+1)		Dex 13 (+1)		Wis 13 (+1)
Con 13 (+1)		Int 13 (+1)		Cha 13 (+1)

Thanks to Monster Maker 3.1 from Encounter-a-day. Also submitted to The Open Archive.
Source image from spilopterus