Difference between HIM training plans

I am trying to decide if I go with the Silver or Gold membership.  I am planning on doing a HIM in October.  I am currently using a generic free plan for an olympic distance that will carry me to about 22 weeks out. 

I would like to get a customized plan that works with HR and will help me get to the goal of a 5:15 HIM time.  This will be the 3rd HIM I have done...but has been 2 years since my last one.

Do the silver plans have any type of customization for time/paces and HR?  Or is that only available in the Gold?