New to 337's seeking advice

[Trippster]

Greetings everyone. I've been reading this forum for a month or so and have learned so much, but I have to ask for advice and tips for my situation.

I'm a 20,000 hour airline guy that hasn't flown GA much, if at all in 30 years. I want to get back into it and the 337 seems like perfect plane for me. Most flights would be myself, my wife, the dog and some bags. I can't imagine ever really needing to "load it up". It's about comfort so my wife enjoys flying with me. We would likely keep legs to 3 hours or less, but might go longer in some cases. I definitely want a good IFR capable plane, but I won't be pushing things regarding low ceilings, freezing temps or convective activity. We don't ever NEED to go anywhere. I do love having the extra engine and space to move around even though I'm only 5'4". We live on the North side of Houston near Lake Conroe, so it's hot and I want AC. I've read many threads on flying higher and getting the turbo or P model, but I don't think we need that. A good NA plane with good AC is what I think works best for us and our budget.

I've been reviewing a few planes on Controller, TAP, Skymaster etc. I like N5478S on Skymaster because it has the AC and I've already talked with Owen Bell about it. (He's got the airplane and keeping it running).

Does anyone know anything specific about this plane that I might not find out easily, but should know?
Does anyone know of another similar aircraft with AC that might be for sale possibly?

Eventually, I will probably put in a glass PFD and MFD because that's what I'm most used to and comfortable with, but I can wait a bit if need be. I'd like either mid time or less engines or runout engines and I'll get new ones. I'm trying to keep it under $100K for the purchase.

I've never flown a 337 so I'm going to go to Nashville and go up in one that Owen has available to see how it fits. I'm also thinking of going to Corsair in VNY to take their ground school and flight training program in their 337 and get a biannual. Any place else I should look at for this?

Finally, any other advice on anything I might want to study up on regarding the 337 or be aware of? I have a very good friend who is an IA that will help me with a prebuy, but he is only slightly familiar with the 337 and it's been a while.

Thanks again for any and all help

Tripp