Good luck! I hope everything turns out fine! I really hoped someone would come and maybe suggest a few more things (I'm pretty new to saltwater and do many things unconventionally in my tank)
But yea I hope everything turns out alive and healthy, try to do it asap, no one likes living in a bucket. And if there is no RO water, you have to use tap with tap water conditioner, not the end of the world either. Fill up your buckets, mix, treat, pour, repeat!