I really want ot build it, & it must be able to take a crash. Unfortunately these two criteria don't go together, especially when you don't know how to fly & are intent on teaching yourself. I know these aren't the answers you're looking for. But the bottom line is your not really gonna find too many, if any ppl in here that are gonna co-sign doing it on your own.

You mentioned the Dandy, it looks like an easy gentle flyer however these Mountain Model planes are kits. Not ARFs or RTFs. So while it may fullfill your desire to build your own, it will not take a crash. And rest assured you will crash it, first flight most likely. After all the hard work & time invested to build a plane from a kit do you really want to go out & re-kit it first time out?

I understand you want to do it yourself, & you want an electric park flyer. If that is the way you are determined to go at least get something that might survive a few crashes. There are a number of small RTF parkflyers that don't have that "toy look & quality about them. Parkzone has a RTF Version of the J3 Piper Cub that is 3 channel & has a dihedral wing like a trainer instead of a scale J3 wing.

Your still gonna crash it, but it might survive a little longer than any balsa & ply built up airframe.

Keep in mind that you can still hurt someone very badly even with a small parkflyer. You should really be thinking about 1st) joining the AMA, 2nd) finding your local club & getting hooked up with one of the instructors there, & 3) getting a real trainer to learn how to fly safely & properly. Once you've achieved that then you can allways start flying any of the parkflyers you want.