Club, you are getting heaps of good advice.
I have been looking for a used Star 4, new Star 5 for a while and one consideration is major service problems- if these guys at TransOcean will back you up(you mentioned training), have been in business a while with Tyger then it is probably a good one to go for. if they are close to you ...even better.
You are not crazy!
...we all are...about tennis.