Hours for a customer

We are using the account object for individual store locations, but as we grow we will be adding other types of accounts to the object which will have different requirements. 

The stores are open 7 days a week, but have different hours.  We'd like to capture the hours on the store page. 

So as we see it we have the following options:

use 14 short text fields which could impact us down the road - since we only have 45 ST fields.

• Monday Open Time:
• Monday Close Time:

use pick lists for the hours uses 14 of pick list, but we have 100 to use.