As Teresa said (well, I have to correct her just a tiny bit) max points in a red launch are 2,998 + 360 = 3,358. So if you launch alone, you should put at least half of those points 3,358 / 2 = 1,679 pts - as you add only even points, it is rounded up to 1,680. If there is a second account in the launch and you fully trust it’s owner that he/she will stay behind you, then formula is 2 * your points + 2nd account points >= 3,358, it means if your friend adds 256 pts, than 1,552 pts would guarantee your first seat.I don't know the exact formula, but I use these calculations: 1500/360 which is 4,16. 4x360 is 1440 and 5x360 is 1800. If I only invest 1600 someone else can invest 1399 + 360 = 1759 and pass me. If I invest 1700 someone else can only invest 1299 + 360 = 1659 which isn't enough to pass me.
The magic number should therefore be somewhere after the midway point between 1660 and 1700
My math probably isn't 100% correct, but I don't see any way to pass someone who has invested 1700 points in a red launch