Why did palpatine create the first order

In ep9 we see that palpatine has a ‘final order’ that will take over the galaxy in one fell swoop with their 1000 death star lasers. The final order seems to be orders of magnitude better than the first orderIf the final order is so damn good, why did palpatine even make the first order? What’s the point of starkiller base of he has 1000 of them up his sleeveIs this just the biggest plot hole in star wars or is this explained somewhere via /r/StarWars https://ift.tt/AVDBrw2