To be perfectly honest with you, If you go with the R11 driver you can't go far wrong. I see that you have the burner 2.00 irons in your bag, and they are perfect for the time being.
To get to level 90 for the R11 irons you have to get an awful lot of points (and I mean tens of thousands). So you will have Plenty of time to save up for them. But I suggest that you do as soon as you can.
I hope you are taking advantage of the get free credits options. Whilst I was waiting to accumulate points to get to level 90 thats all I did and saved enough to pay for my R11 irons without spending to much of my own money.
Hope this helps and believe me, if you do get them they will transform your game. First day with the R11 irons I got a 29 back 9 Kiawah.
Happy Golfing
P.S. I used the Rossa for a long time but have just upgraded to the lvl 66 Ghost Spider. Never looked back. Don't think I will need the lvl92.
MEL1950