337 for a brand new Pilot?

[JmG2102]

I first posted this question back in 2013 and got some good feedback, I moved down to the El Paso Tx area and have restarted my flying dream.

I'm almost 52 Yrs old, Lots of book knowledge, Wants to live to a ripe old age flying. Just getting my License through Military flying school. Very interested in a 337( just the looks of the Aircraft make me want to have one) But I will be flying for pleasure with my wife and I. I have read a lot about the 337 series and I think after all of my research that having a 337 (though 2x as expensive to operate and maintain) is the way I want to go. Is this silly to jump into wanting a 337 or should I get stick time on single engine first?

Is there a separate Cert/endorsement specifically for a 337 (Center line thrust)?

Thanks for answering a newbie question!

Jon G