Upcoming Celestial Events

There's an annular eclipse coming up in May, and Venus will transit in front of the Sun in June.  The transit in particular is of some interest, since the planet will not make the transit again for over 100 years.  Hopefully I'll be dead when that happens.  While I didn't set out to do astrophotography when I bought my camera, I'm considering picking up a solar filter and a teleconverter (probably a TC-300 to mate to the 400mm—turning it into a 1200mm- f/11-equivalent lens on my d7000) to try to capture both events.  I'll probably do some tests on the Moon if I make the purchases.  I'm also considering extension tubes, which could have some interesting effects on the 400 as well, particularly in macro ranges.