For making foam board chuck gliders, you could make plans from single-stage-to-orbit spaceplane concepts, like the Skylon or the X-33.
Lots of chuck gliders are just a profile and a wing, so you don't have to make the complex curves if you don't want.
About the hypothetical design you drew, can I make a few suggestions? With a scramjet engine, you can achieve speeds much faster than 1,075 mph, more like 3,000-4,000 miles an hour. Scramjets can't work outside the atmosphere, though, so if you want that design to go into orbit, you should add a separate rocket engine, or replace the scramjet with a S.A.B.R.E. engine, which is a jet engine that turns itself into a rocket.
https://en.wikipedia.org/wiki/SABRE_(rocket_engine)
And if you want it to dock with the space station, you should add a docking port somewhere.
Finally, the cargo of an aircraft or spacecraft is generally called the payload, not the "warhead." A "warhead" is the explosive device carried on a missile. If your school project includes designing a missile:
1. I really hope it's just a school project
2. Maybe look at something like the Tomahawk for inspiration?
Good luck!