Crypto Trading Mobile App Development

Hi,
Mujhe ek crypto trading app banwani hai, jaisa neeche describe kiya hai. Please poora scope review karke mujhe detailed cost + timeline bhej dein.
Overview:
Ek non-custodial crypto trading app — Spot trading (DEX-based) + Perpetual futures trading, aur ek built-in self-custodial wallet bhi ho — user ko alag se koi wallet app use nahi karni pade.
Backend:
Node.js server (Railway ya kisi bhi hosting pe)
Blockchain reads ke liye JSON-RPC proxy (multi-chain, node failover ke saath)
Block-explorer API se transaction history
Perp exchange integration (order place karna, positions dekhna, cancel karna — agent-wallet model, sirf trade permission, withdraw ka access nahi)
Background jobs (transfer status check karna, fee-rate poll karna)
Email-based login/auth (Privy ya kuch similar)
Blockchain / Web3 integrations:
BNB Smart Chain + Arbitrum (EVM) support
DEX integration market orders ke liye (jaise PancakeSwap router)
Off-chain signed limit orders (CoW Protocol jaisa kuch, EIP-712)
Hyperliquid perpetuals integration (ya koi similar perp DEX)
Gasless transactions — ERC-4337 smart accounts, gas ERC20 token se pay ho (native coin nahi) — Pimlico jaisa provider
Cross-chain bridging deposit/withdraw ke liye (Across Protocol jaisa)
Frontend:
Single-page mobile-first web app (dark mode + light mode, dono fully separate)
Spot trading screen: live prices, buy/sell, ~25+ pinned coins
Perp trading screen: leverage slider, margin/position size calculator, liquidation price estimate, positions/open orders/trade history/order history ke tabs
In-app wallet: multi-chain balances, deposit, withdraw, spot/futures ke beech transfer
Swipeable tabs, percent-of-balance slider, coin picker with search
Abhi tak nahi bana (yeh bhi alag se quote kar dein agar possible ho):
KYC / identity verification flow
Admin panel with audit logs aur reporting/export
Deposit caps / user limits (per-user + total)
Email/SMS notification system
User onboarding assessment (suitability check)
Price-deviation guard + trade audit logging
Mujhe aapse chahiye:
Cost breakdown: Backend / Blockchain integrations / Frontend-UI / Testing / Deployment
Fixed price dete hain ya hourly — dono ka estimate bhej dein
Timeline (weeks mein) — MVP (Spot + Perp + Wallet) vs full scope (upar wale "abhi tak nahi bana" items sameet)
Aapka past experience DeFi/DEX integrations ya Hyperliquid ke sath (portfolio links agar hain)
Launch ke baad maintenance/support ka cost
Quote ka wait rahega.