No start or crank advise

[spdrcr21]

Hi Boxster family!

I was wondering if anyone can just help me go over my troubleshooting steps (I've searched previous forum posts). My 2004 Boxster 550SE will not turnover. For the past month or so it would take longer and longer to crank over (I know this is a common issue due to heat soak). A few days ago it quit turning over. So far I've:

Had the battery load tested
Checked the Battery wires
Checked the relevant fuses (E1,B8, C1, C2, and C4)
Jumped the clutch safety switch
Jumped the starter relay in the rear trunk
Checked the starter ground wire in the Engine Bay
Replaced the Crankshaft Position Sensor again (I had replaced this a year ago)
Checked for codes using a Durametric (no codes stored)

Any steps I've missed or what to check next? (I haven't a 2004SE so it has a newer ignition setup so I haven't replaced the ignition switch)
My battery was reading 11.4 volts after I replaced the CPS. I'm currently charging it.
If charging the battery doesn't work my next step is to change out the starter. Is this the next step I should do?

Thank you!