How to send system run schedule to modbus registers

Any recommendations on how to submit a system run schedule view modbus RTU?

Background:

I have an HMI running a python 2.7 gui (Pyside/QT4). I'm using on of the serial ports to run a modbus-tk server (slave).

I have an IoT gateway that will pass a motor run schedule to the HMI through modbus registers on the HMI.  That's the concept anyway.

The schedule structure will look like this:

Sunday: start time*, end time, belt**

Monday: start time, end time, belt 

Tuesday: start time, end time, belt 

Wednesday: start time, end time, belt 

Thursday: start time, end time, belt 

Friday: start time, end time, belt 

Saturday: start time, end time, belt  

* time represented like this 13:45 unless someone has a better idea

**belt is a binary 1 or 0 indicating to run belt A or Belt B

My Approach:

I was thinking of creating a bunch of registers on the HMI modbus server, for example:

Monday start hour

Monday start min

Monday end hour

Monday end minute

Monday belt

Each would be a 16 bit register.  Maybe not the most efficient but I don't have any register limit constraints really.

The question:

Before I start writing code, how would a pro handle this?  Would you use a bloaty register approach like this or would you try some clever bitmapping stuff?  Some other approach that I'm not aware of?  Any ideas would help!

Thanks