how hard it is to clean a wooden viv?

Looks good to me! It actually may be exactly what you're bp needs right now because it is smaller, she may feel more secure in it. Just be careful with the heating pad. They aren't made to be left on for long periods of time. I'll let others chime in on that, just check it regularly.

you maybe right. however, she may take a little while to adjust to the new home. but after she get used to it. im sure she'll love it. maybe i should leave her for a 2 weeks in this small one. just like you said, she may want to feel secured. so i'll leave her in this box until she feeds. what do you think?
after she feeds, i'll move her to the wooden box after 48 hours.

Sounds good to me! Good luck!