If you have the option of doing the Fast track course over the ICM I would jump at the chance, you are effectively getting 2 courses for the price of 1.5. there is a lot of slack in the ICM at the front that can be compacted and the extra modules that are in the FT are well worth the cost.
think of it this way ICM (install configure manage) two of those you only do the once. manange is ongoing, aslo the modules in the FT are also aimed at support and management.