481777 Avactis 2.1 customization

We need customization from someone familiar with Avactis 2.1 Shopping Cart. We are a small retailer, with an existing website ([login to view URL]) who wants to start selling online, and have come across Avactis as one of our options. We are interested is doing an implementation in stages. For Stage 1 we want to do simple online ordering that we can implement within 3-4 weeks, without any extra bells and whistles. We would like to do grid order pages like [login to view URL] that we could add to our website (Avactis Mini Cart??). We then plan to expand capabilities with Stage 2, within 2 months after Stage 1. We have some specific Shipping requirements that need to be met, that we did not see available in our review of their User Manual: • We need to offer same day shipping by our own truck (within Manhattan, New York City zip codes). • We need them to be able to select delivery date (same day, or later date). • We need to have them be able to choose their delivery time (2 choices), based on their zip code. • We need to offer flat rate shipping charges by zip code (within New York City). There will be 2 rates: 99¢, and $2.00, depending on zip code. We also need to have a minimum $ for their order to be accepted. (Our minimum delivery order is $32.00, before sales tax). Please let me know if this Stage 1, with the Shipping requirements, and Minimum $ order, is doable, and which of it is a custom mod. What do you think, cost-wise and time-wise, would be involved? Thank you. I would appreciate a quick reply, as we are trying to make a GO / NO GO decision within the next few days.