Push and chin up goal challenge

Start of my personal challenge to achieve 2 of my goals by sept 2010 - at least 1 full push up and 1 unassisted chin up

I will have been crossfitting a year by then and I want to start focusing on these two goals as I feel they are holding me back - push ups have really stalled and chin up progress has slowed.

Found various stuff on progressions around the net but most people say just keep at it - which I find sort of not helpful grrr I need a bit more of a structured plan.

And thanks to Mastroj of Crossfit BransX community he suggested a 30 day challenge - so as of tomorrow I'm going for it....

Push ups against bar at pin 2 in my rack (just above knee level) x 5, then day after 6 and day after 7 etc
Chin ups with blue band assist and feet together x 5, then day after 6 etc
for 30 days on top of normal wod's done at anytime of the day

I'm aiming at sets of 2's for a start and see how I get on.