replumb: approved way to bring main water supply up to attic and into house?

hal74

i have a 3/4" PVC main that switches over to copper as it enters the house through a concrete block exterior wall and then down into the slab.

the copper pipes are getting pinholes, so i decided to replumb using PEX-a/propex.

my question is, what is the best way to bring that main water supply into the house? i've searched the 2009 IPC and found nothing specifically relating to this. is there some code regarding this in the construction code? where should i look?

is it against code to just run insulated 3/4" PVC on the exterior wall with clamps into the attic where i'll switch over to PEX? i live in florida, so while we do get the occasional freeze overnight during the winter, it seldom lasts for more than an hour or two.

is it absolutely necessary to run the pipe through the cinder block up to the attic? if so, do i use PVC or PEX for that vertical run? does PEX need to be sleeved when running inside of a cinder block? does the PEX need to be anchored midstory inside the cinder blocks like it does inside the house?

thanks in advance