As Fanny said, go the module route, if low volume. I've been in Enterprise 100k-1M/year radio, and support from all of the "big three" is rough, some off-load support for say $40k & ca. $200/hr. thru third parties.
As we unveil EE Times’ 2015 Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. Panelists Dan Armbrust (investment firm Silicon Catalyst), Andrew Kau (venture capital firm Walden International), and Stan Boland (successful serial entrepreneur, former CEO of Neul, Icera) join in the live debate.