Roughly how much am I looking at to add marine a/c and a generator to a boat in the mid 30 foot range?

A friend just bought an A/C for a little over $2K and installed it himself. (It's more complicated than you would think, but doable) My info on Gensets is old, but I would expect a 5K unit installed would be around $10-12K

If this is for a go-fast, look into a 7k BTU A/C and a 2500 watt power inverter w/ big 8D batteries. Much cheaper if you only need it for short overnighters. I've considered this but decided against it before I determined if it would work well or just get by.

I put AC in my cafe for about $2500. Worth every penny. I got Mermaid air 9000 btu heat/air. Great unit

Is there a website for that unit?

I've got mermaid 9000BTU--if I had it to do over I'd get a 12,000BTU for FLorida--especially this summer.

I got a 5KW Kohlerfor $4000 2 years ago.

Check with Oean Breeze in Ft Pierce/Stuart FL. They are extremely knowledgable and have a great product--also sell direct.

Try
www.mmair.com