Judging the crumpler.. I used to put my D5000 (ungripped) with 70-300 and the kit lens on top and I could just squeeze a flash in by folding it. You should be able to fit it all in, I made a gamble and ordered mine from a magazine so didnt know what to expect. I havent had any experience with the Lowepro but believe Jessops sell them? Not sure, but might be worth popping in your local and checking it out.