You will just have to try it in tempo to know for sure. If you prefer to execute the shake roll with the right hand, you should pick up the tamb. If you do wish to play thumb rolls, hold the tamb. End each thumb roll with a palm stroke by collapsing the wrist into the tamb. Put the tamb down without making any noise while counting rests for the triangle entrance.
Triangle Hold the triangle at eye level.
Play the soft section with the tip of the beater. Begin the cresc roll slowly with the very tip of the beater. Slowly move the beater in as you cresc. During the 2-measure rest, pick up the tamb. Again put the tamb.