In most cases there is no instant success button here. I will say you're going to have a honeymoon phase your first year - use it to get some equipment that you need or repairs before it ends. After that it's time, time, time. Having facts on what you need, presenting it, and then giving it more time.
Anytime you go to ask for more funding, have a why for it. Have a concrete example how it will benefit the kids, and have alternative solutions in hand.
Then give it more time...
Honestly I think there are some districts where the admin situations will never make a program ripe for success. But, I think with the right determination those are fewer and far between. You have to be willing to stick through enough time that you have only your kids in the program, and then a little more time I think before you'll see something from a true rebuild.
The consistent part is the big thing here though! Too many programs like this are on their 3rd or 4th HD in 4-5 years. The kids don't have time to get hooked by one individual, and their heads are spinning from multiple ways of teaching. Stick with it, and I firmly believe most situations can be successful!