New Stradale owner. Some questions and pictures

Hi everyone. I have reached out to several of you during my search, and I'm grateful for the time many of you have spent responding to my questions. I had been looked for a ~20k/mi CS in blue. A nice car with no bad history or paintwork, but also one i could drive and enjoy.

Back in November, I found a 6 year old picture on this forum of the the only Blu Mediterraneo CS. I reached out to the owner and struck up a conversation. He was deciding if after a decade of ownership, was he ready to sell the car. The timing wasn't right for both of us in November, but a couple weeks ago he reached out, we struck a deal, I flew out to inspect the car, made a friend, and bought it. The gentleman clearly loved the car. I spoke to the shop that maintained it for the last decade and the car came with a binder of records reflecting all of their service, books, keys, covers, etc. I'm really excited as I feel like I found a gem.

I had a friend transporting Porsches from LA to the east coast at the same time, so he had an empty trailer coming back west. he picked the car up and 5 days later the car arrived in SoCal. My awful iphone photos are posted below. It goes to the spa for paint correction and ceramic before I spend time on better photos.

I've been reading what I can find on this website, but I was hoping people could point me in the right direction on a couple things.

1. Is there a bluetooth dongle that works with this Becker radio? There are several for sale online, but they ship from china with limited documentation. (Do you ever get used to these blind spots? I'm historically a aircooled porsche nut. And I hate aftermarket radios, but almost feel like this needs a backup camera.)
2. What is the offset and sizing of these wheels? The clearance looks super close, so I assume 18" challenge wheels won't fit. The stock ones are classic, but I think a set of white wheels would pop on this car, and as the originals are perfect, I'd like to just take them off and store them. (I've also always loved the 355 Speedlines which I know don't fit, so I'd consider having something similar made, or TE37's, which I recognize not everyone likes - but most people will say to leave the stock wheels on anyway...)
3. Alcantara care - the driver seat has what appears to be pretty typical seatbelt wear and a little bolster "pilling". Is there a way to correct this? I've seen videos of sandpaper, combs, and other strange methods.
4. exhaust valves - Is there a way to wire them open all the time? or on a switch? I work on most of my cars, so don't mind doing it myself if there is a FAQ or "kit".

Anything else I should know about these cars or any place you'd point me to read?

Thanks for the input, Matt

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see? I know my wheel tastes are not like everyone elses. I'm a kid from the 90's, My 964 cup car is on white wheels too.

 

that's great! but what is it?

 

I think I am going to have to go to Mackin. 5x108 in 18" are rare. 5x108 in 19's to fit the CS brakes are on another level of scarcity unfortunately.

The other thing I was considering, and I'm not entirely sure how I feel about it, but I have talked to a custom wheel vendor who would be willing to make a 19" "tribute" to the 355 challenge speedline wheels. Clearly they wouldn't be in magnesium. White with body colored speedline lettering. I can't decide if that would be pleasing long term change. I realize it will be polarizing to some purists. The stock BBS looks great, I just wanted something a little...not stock.