I've got a Trailstar, and if I remember, I'll try to measure it a bit later.
Couple of quick points:
1. The MLD Trailstar has Dyneema peak reinforcements. Think about how you want to reinforce that peak.
2. I don't really sew too much, but I do know that if you're new to it, silnylon is a beeotch to work with. Very slippery. Use lots of pins, but be careful not to pin outside of the seam, otherwise you'll get holes in your canopy!
3. The edges of the Trailstar have a slight cat-cut to them. This helps with getting a nice taut pitch. Consider how you want to replicate the edges.
There are many people on here that know A LOT more about sewing that I do. I'm sure they'll come along shortly.
Edit: I just saw in your original post you've considered the cat-cut (deflection?)