Strategies for long term outdoor storage

I don't have a dome or dedicated structure, and have just started leaving my rig outside semi permanently. It's been great for capturing across multiple nights, but I'm concerned about long term affects of moisture on various components.

My solution right now

• Telegizmo 365 cover (bottom not drawn tight)
• 25W silicone heating pad, always on, attached to pier extension
• ~5W from dew heaters, always on, primary and guide scope
• Portable lithium ion battery is constantly powering the mini PC, mount, and powerbox. The battery and PC are fairly exposed in the tripod hammock near the telegizmo opening, not in a sealed container.

I'm concerned about moisture collecting in my camera (ASI2600MM), filters + wheel, and mini PC being quite exposed to the open air.

I am in San Francisco where it doesn't usually rain (for the really rainy months I'll bring it in) but it is very high humidity and often foggy.

Can you offer any reassurances or warnings based on experience?