How much in cash do you already have? The CD ladder would count as cash, which is an important part of your portfolio. If you have enough cash, I would not move more funds to there. but if you do not have an appropriate amount of FDIC protected cash, IMHO, that would be more important than bonds.
"We live the lives we lead because of the thoughts we think" ...Michael O’Neill
"We can cannot compel others to do our will" ....Norman Goldman
"There never is shortage of the gullible to accept the illogical"...Anonymous