nigga, one thousand bars is impossible... and if you DO do it, it wouldnt be good.. sorry
canibus did a 100 bar freestyle, tha shit was dope, and it wasnt too long either... no chorus, no name droppin like game did... if you do a thousand bars wit just hardcore rhymes, no braggin about cars or nothin, then i'll respect that but it'll be hard as FUCK... im workin on 100 baRS right now... thas it... then i'll progress to more. i neva heard game's track but i heard it was dope... i'd reccomend trying 100 bars first then progressing to a thousand because this shit is seriously hard