Why not save up the $8000 yourself. Take leave (without pay) from your day job and pay yourself a regular wage from that $5000. Work on your MVP for two months.

Why not save up the $8000 yourself. Take leave (without pay) from your day job and pay yourself a regular wage from that $5000. Work on your MVP for two months. When you're done, use the remaining $3000 to crowdsource some beta testers, get feedback and start some initial marketing to gain customers. Who needs the OP?