I built one a little over a year ago as my third plane. It's a very docile plane to land and fly but with enough control throw you'll still have enough excitement to last a while.
There was a pretty active thread while I was building here:
[link=http://www.rcuniverse.com/forum/m_4293929/anchors_4293929/mpage_1/key_chipmunk%252Cbuild/anchor/tm.htm#4293929]Super Chipmunk Build[/link]
Beefing up the landing gear blocks is a good idea. I beefed mine up and still managed to rip one out (of course that's because I stalled out about 3 feet off of the runway and it's a miracle that no other damage was done).
I love my Chippy! Have fun building and flying!
Mark