Hi Santosh,
Even i am the same boat as yours. I was also a SRM consultant who is now working on Ariba apart from the occasional work which i still do in SRM. From the trainings which you have listed above relates to more on the Procure-To-Pay perspective and the ones which you have mentioned there are pretty good.
Apart from these there are other things which you might also want to look at such as the Sourcing, Contract modules which are gaining transaction in the current market.
It is a good time to get equipped in Ariba as the market is slowly moving towards the cloud based procurement system which SAP is also aggressively marketing. All the best for your learnings.
Thanks & Regards
Pramod