German translations for "I guess"

How would I translate the expression "I guess", meaning someone asks me something and expecting a full agreement, but I want to say a nonchalant "I guess" in a meaning of "No, but if you really insist and expect me to then I might".

Na ja and make it long and drawn out. That or jein.

Thanks for the quick response

Or how about " 'Mal schauen " or "Schauen 'Mal " (two of my husband's favorites, used when he doesn't want to say No, but is hoping I'll just forget and the issue will die on its own)

I would also say " ermm jeiiiinnn " long and drawn out.

Wird wohl so sein.
or
Passt scho!
or
Von mir aus.
or
Wanns d' moanst ...
or
Da kann ich nicht widersprechen.