Am in way over my head?

I just bought a new house with a large yard for the first time ever. The yard is 35ft by 65ft, so with a 5 foot border 25ft by 55ft. I was hoping I could have the majority of the yard grass for my kids to play on but its a hugw project Quotes to get a layer of top soil and seed down have been $3,000+. I have a lot of other more important expensive with my new home and the yard is more of a “luxury purchase” so its low priority

I maintained my last properties yard but it was dramatically smaller . I no issue maintaining the large yard and buying appropriate equipment to seed, fertilize edge etc. but the initial setup is so much more expensive than what I expected. Is there any hope I can do this job myself? Any advice would be appreciated

(I live on Arizona)