Multi-service, multi-day, cumulative service bookings

I am trying to find a scheduling/booking plug-in to build a site to allow customers to book carpenters and other tradesmen.

They need their customers to select from about 15 services in a ‘shopping cart’ style selection.

Some of the services will be a few hours long. Some will be 1, 2 or even 5 days long.
The services need to be cumulative as well (so picking a 1 hour service + a 3 hour service plud a 2 day service will require a booking of 2.5 days)

The longest total appointment needed will not be expected to exceed 2 weeks.

EXAMPLE:
Imagine a job booking for a carpenter…

Assume one day has 8 hours (configurable).

Assume there are are 5 services:

A. Hang an internal door (2 hours) – ￡30 – enter number of doors
B. Build an understairs cupboard (1 day) – ￡300
C. Lay wooden floor (1 hour per square metre) – ￡30 per square metre – enter number of square metres
D. Remove architrave (3 minutes per linear metre) – ￡4 per metre – enter number of metres
E. Site inspection (1 hour) – ￡75

The customer chooses to put the following services (and quantity of each) into his ‘basket’:

2x ‘A’ = 4 hours / total ￡60
1x ‘B’ = 8 hours / total ￡300
20x ‘C’ = 20 hours / total ￡600
1x ‘E’ = 1 hour / total ￡75

So then at checkout they would see these items, and the total of 33 hours & ￡1,035

Then they need to choose the start date / time for the work, which (with an 8 hour day) would be 4 days and 1 hour.

Once booked, this should update/sync with the iCal on the carpenters iPhone.

In summary:
– Must be able to select multiple services
– Must be able to choose how many of eacch service
– Total may be multi-day
– Must be able to then select the start timeslot in the calendar at, or just before, checkout.
– Must update iPhone calendar (NOT Google calendar)

Can your plug-in do this?