Adding Autopilot to E-127

[[email protected]]

I have a Bayliner Trophy Pro 2352 walk around with a Mercruiser 5.7 L and hydraulic steering. My vessel has a Raymarine E-127, Raymarine 18" digital Radome and Raymarine B60 20 degree tilt transducer. All applicable electronics have the latest versions of the operating system and Lighthouse software.

I am a disabled Vietnam Veteran and would like to add autopilot to make my time on the water along the Pacific Coast a bit easier and more pleasurable.

My local West Marine store is closing soon and so far I have been unable to find anyone who can assist me in developing a list of what I need to purchase to add autopilot to my existing systems.
Any assistance/suggestions/recommendations would be greatly appreciated. I have been out of work for over two years so to do this upgrade at all, it need to keep the cost as low as possible while maintaining safety and reliability.

Regards,
John