If you know you can be fully prepared before the change and if you're still able to find an open spot, then I'd say go for it--why bother with a new section if you don't have to?
However, it sounds to me like you
won't be fully prepared, especially if you're just starting to study. So don't rush yourself because of IR! The truth is, IR really isn't that big of a deal right now. It's scored separately from your 200-800 score and it'll likely take years before IR score data is actually relevant to admissions officers. Take the GMAT whenever you know you can maximize your 200-800 score.
For more information on IR, visit our website:
https://www.manhattangmat.com/ir.cfm...and watch a full
Manhattan GMAT IR workshop here:
https://vimeo.com/40520767All the best!