There is a SiteOne in Newton about 20 minutes away. I will call them tomorrow to see pricing. I’ve got 3 or 4 types of grass going on in my yard plus weeds. My plan is to keep on as is until September. Once the temperatures are between 70 and 80 degrees around mid to late September I will aerate and overseed. I will throw down a starter fertilizer and Milorganite at the same time and let it grow in for 3 weeks to a month before cutting with daily watering. I will let winter kill the weeds and then use a pre emergent early in the spring to keep them from coming back. That should set me up nicely for next year. Hopefully a couple years of overseeing with Fescue will crowd out the other types of grass. There are spots on centipede grass and what looks almost like Dichondra. There are also spots of fescue and what looks like Zoysia.I plant a lot of turf-type tall fescue. My go-to grass for areas in full sun that burn out. Nice deep dark green that once established is drought resistant. The Lesco Teammates plus (has some perennial ryegrass and bluegrass in it) available from SiteOne is what I use. Likely a store near you. They mostly sell to golf courses, municipalities and landscapers but will do retail sales too.
I'm figuring on overseeding with turf-type tall fescue the next couple years and hopefully that will take over and fill in the voids and crowd the other grass species out.SiteOne has different pricing tiers for their customers and you'll likely get the highest. But no harm asking if they can mark down for you, which managers are given the discretion to do. They also have the straight Teammates tall fescue and might have other tall fescue mixes or varieties as well. Bags are all 50 pounds as far as I know.
Edit- we have some Zoysia in my area. Good luck crowding it out. Probably not worth the effort.