Everything I have read on people using admod brings no change to sales at all. Also the OP breakdown on 10k, I have read a post very similar to this it looks like you may of taken from it. I do not recommend spending that on your first game, make the first one for nothing bar your time, then next one, spend a little to help with the game, no more than a few hundred pounds, then from there go up with each game, from 200, to 500, then 1 thousand , and along like that, all money must come from the game sales, grow slowly. But do not jump in and spend 10k of your savings on a game, I can guarantee you will lose the money, learn to crawl before you can walk.
Also from my own learning experience and talking to developers that have actually made money and have supported themeselves for a number of years from indie games, do the opposite of what you are TOLD by mainstream media, which is, casual games, low price point, don't do this (And I dont care how many bird games have sold on the iPhone, probably by Apple 'subsidiary' developer companies), go niche games for hardcore gamers, (you know, those people that actually buy games and have done for years, not middle aged women like what you are TOLD to make games for) and higher priced games. Finding customers is hard, half the price means double the prospective customers, you have to sell a hell of a lot of games when the product is under 5 pounds, you also negate advertising as the end point sales price is too low to cover marketing costs.
