carolinafjr,
Brass ones. Big.
I purchased my 06a after a 30 year hiatus from bikes - my last being a CB750K4, which was considered a pretty hot bike in 1974. I did all of my crashing and burning on my first bike during high school. 90CC Kawasaki, IIRC.
I've met another rider that bought an 06A as his first bike (ever!) It's BigDolma's father in law - and as I watched him ride away, I almost couldn't look - I just said a little prayer, and hoped that all those hard things out there stayed out of his way. He's still with us, but I don't think he rides very often.
I think that you're experience with the HD rentals will do you well. You've done the MSF class, you've ridden some large displacement bikes (notice I didn't say high horsepower), and I think you may have an idea what the FJR is about.
When I put down my deposit last year on the PDP, I still had 6 months to learn everything I could. I've read just about every book out there about motorcycle safety, handling, etc., and I re-read them still - all good stuff.
One of the admins on this board, the highly respected and revered Beeroux, (be nice guys, I'm trying to suck up here ! ) told me to be careful - if I recall his statement to me, (forgive me, this may be a paraphrase) it was:
"Be careful - cause the FJR will go from zero to hurt faster than you can imagine."
And he's right - it can.
But I think I can safely say this - if you buy the FJR, you will absolutely love it - but you must respect it. Every time I climb on mine, I go into 'combat mode'. The operation of that machine is primary, it must be your only focus. I've found that when I don't do that, I start making newbie mistakes.
Don't ever become to comfortable with your ability to operate this machine.
Let us know what you decide. Lot's of support on this forum.