RBS customization - Phase 1

Hey, I want to modify the RBS script([login to view URL]) which is a scriptlance clon. I want the provider and buyer account to not be separated, and be exactly like how it works in GAF in ALL aspects. Please do not bid if you are not familiar with the script. I'm not in a rush, so please don't charge extra for doing it in 2 days. I'm a developer myself (see feedback), so be reasonable. Ask questions, so I'll know you understand the project scope. Mention the word cucumber ;-) that way I can tell you actually read the description. OOP knowledge is a must! Thanks, Sid