Simple Crypto Exchange ₹3-5K

I need a lightweight crypto exchange that fits within my ₹3,000–5,000 budget. I am not chasing an enterprise-grade product—just a clean, working web app where a user can sign up, deposit to an in-built wallet, and place basic buy/sell orders.

Core flow I must see working:
1. Secure sign-up / log-in (email + password or MetaMask)
2. Wallet generation or connection
3. Simple order form to buy and sell at the latest market price
4. Instant balance update and a short transaction history visible in the dashboard

I am flexible on the tech stack, but a typical React + Node.js (or Laravel/PHP) back end tied to a public price API such as CoinGecko or Binance REST will keep costs low and development fast. If you already have a starter template or white-label script, feel free to propose it—speed matters more than bells and whistles.

Acceptance criteria:
• Deployed demo on testnet (or sandbox) that lets me run a full trade end-to-end
• Source code handed over with clear setup instructions
• No hard-coded private keys or secrets; use environment variables
• Delivered within one week after award

Let me know the framework you prefer, how you will handle wallet integration, and the approximate timeline so we can move quickly.