Build a pair of Solana smart-contracts and phantom wallet integration

I need a solana backend developer to make some simple contract based on a frontend website (made on reactJS; not live yet); i need the wallet phantom to be able to connect to the dApp, then i would need to have a smart-contract to be issued when pressing “Stake” in the page and another one when pressed “Approve smartcontract” in the page; the result of the connect wallet should be the taking the user to the page which now is achieved when simply pressing on the cited button “staking”, while it should send an email with the message (OK) and it should display a section like the one of “active services” . This should be something really simple , just for a demonstration. As amount of sol requested it should be just around 0.01 SOL and the destination solana wallet address should be the the following: 9G2NFALL9nX58oFq4tZ5hKhjfDVEdGP5ntf3kTsKoCuC
https://x-ender.netlify.app/
https://first-demo-site.netlify.app/
https://first-demo-site.netlify.app/choice
https://first-demo-site.netlify.app/selectdrone
https://first-demo-site.netlify.app/dashboard

Please state your project budget.