We have given you a few days, you should have at least one rocket by now, right? RIGHT?
You have lots of options to choose from, even if the kits are not carried by any retailers near you. Check out JimZ's huge library of old Estes and Centuri model rocket plans (and lots of others). These are mostly low-power stuff, and all are proven designs that build well, are stable in flight, and perform well. When you find one that strikes your fancy, you can probably find the parts online, there are lots of places to shop.
For body tubes: Totally Tubular, Apogee Components, Fliskits, lots of others.
https://www.buyrockets.com/buyrockets/tt.html
https://www.apogeerockets.com/index.asp
https://www.fliskits.com
For nose cones: Balsa Machining Service, Fliskits, or spell out what shape you want and our Sandman will spin one for you.
https://www.balsamachining.com
https://www.fliskits.com
For balsa sheet fin stock: check your local hobby and craft shops.
For parachutes: Thrustline, BMS, Fliskits, Totally Tubular
https://www.thrustaero.com
https://www.balsamachining.com
For engine thrust rings, motor mount tubes, centering rings, launch lugs, and all the other stuff: Fliskits, Totally Tubular . .
I think you'll catch on fast