Next Raid

Google told me that the Order 66 raid started on June 25th, last year.  Google also told me the Speeder bike raid was numero uno for 9 months and the Naboo one for 11 months.  That information suggests that Order 66 is quickly approaching retirement.

It's expected that new information on the next GL will come soon.  This GL will almost certainly spearhead the next raid.  

Only you can decide whether or not you spend the tokens now and what your main focus is/should be.  If you just want a raid team and just that....you'd be better saving them.  However, the tokens in the store aren't that expensive now, you can definitely LST some characters from Order 66 and get good value out of them...raid or no raid.