Tenant wants to paint house exterior in lieu of Security Deposit

[Letitia Glenn]

Potential new tenant offered to paint house exterior instead of paying security deposit. Is this a good idea? Or should I require him to pay the deposit and maybe give a discount on monthly rent equal to amount of work done (monthly discount applied until amount is credited). However, I should document the painting must be completed to landlord's satisfaction before tenant moves in. Am I getting in territory I dare not walk into? Help!