Hi Ravi,
On whether HANA good for you? its actually yes and also for all. With the kind of experience you have it should be kind of easy for you to be get familiarized with SAP HANA.
Yes you may face some problems in understanding the landscape of SAP ex: BW BODS or BO. But it shouldnt be so tough.
To mention even the team i had in my current organization where i worked on implementing SAP HANA to a HiTech Major, because of the complex requirements he has got we were writing more SQL scripts there and the team was essentially having previous experience on Teradata and now after working for about 8 months in the project now they are getting more comfortable in SAP HANA.
Hope my answer cleared some of the questions you were having in your mind.
Regards,
Krishna Tangudu