File problems

because my itterations were crazy throughout this whole project i have had countless file problems, with corrupt files, and files that just wont open, because of this my blogging really hasn't been kept up to date. because of this i havent viewed the files since i last edited them to take screenshots to blog, and its only now while putting my 81 in one file that ive had the opportunity to screenshot and blog, however putting the 81 in one file is proving difficult...(its taken over 12hours to place them all in one file, and im only up to 31 in the one so far) and with 15million polygons and every model prooptimized down to as low as possible im going a bit crazy waiting for 3ds to respond. I only hope that this file will actually open again :/ and I'm really worried about render time, as i was planning on leaving it overnight (tonight) however i never expected the arranging to take more than 6hours... lesson learned. if your model becomes to big, just delete and start again... because this has been so much more work, and it probably would've been easier to start again.