or studio apt. or hotels in North County for around $100 or less a day?

There's a Courtyard Inn by Palomar Airport. You might even be surprised at the rates at La Costa.

theres executive suites off of Canon and Holiday Inn palomar airport road will work,,,ask for their suite rooms

I think there is a Courtyard by Mariott in Carlsbad.  Isn't there some type of Inn Suites off of the freeway (Canon Rd)?  I have seen those places in doing business down there so that is the best I can do for ya.

Hope that helps.

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Since when is Mission Valley considered North County??? And Barbilynn, if you are re-locating to North County let me know, I would love to see you and that would be so much more convenient for me. Thanks!

Definately need more providers up here in the North County - There are several places over here in Escondido

If you're looking for inland here's three you might check out

The Comfort Inn - I-15 and Valley Parkway, Escondido
The Palms (I think) - On the south end of Escondido Blvd, near
  Brotherton.  Take Center City Parkway from I-15 North about 1/2
  mile.  This was completely remodelled about 5 or 6 years ago and
  I hear it's very nice now, but I have no 1st hand knowledge.
Holiday Inn - West Bernardo Drive, Rancho Bernardo

OOOOPS!  Missed the North County Part!