Edilaine: I would communicate this thought this way:
"For all the good that it is, that is my best effort for now"
It is close enough. Let's see some simpler ways to "dismiss" your effort that way.
"It is not very good but that is all I can do for now."
"It may not be very good, but it is enough for a first effort."
"It may not be very good, but it will have to do for now."
Or, how about an idiomatic expression? "It's good enough for Government Work!"