You are probably right with your decision of using 600mm. I would gently cut the mid tones to saturate the colors a bit.

nice picture. You may want to visit nandi hills this week to get a similar pictures.
Wondering, if you tried centering jacaranda with other colorful trees around (something like a frame around jacaranda)

-Vinaya

I loved the Compression that the Tele has brought, amazing colors.
I also liked the patters that the tree trunks make.

Thanks Ganesh,Vinaya, Prithvi

Ganesh - i did try doing it and as you told it does look punchy. Probably my eyes have been seeing lof ot B&W off late so my sliders were restricted with regard to saturation and contrast control
Vinaya - that sounds like a really nice idea, let me see if i can sneak in a few hours off the weekend and try something out