film isn't very forgiving to variations in time/temp/dilution. there are developers, however; that will be more forgiving.
the most versatile film is hp5 (empirically evidenced). can be shot from ei 200 to ei 1600 with ease. i've seen it shot up to ei 25,000....yep; u read that correctly.
probably the most forgiving developer is diafine. i must add that choosing a film/developer combination based on the inability to measure dilutions, tell time, and use a thermometer won't produce spectacular results. a film/developer combination to achieve desired results is highly recommended.
i have not used too many developers, but I have used d76 with tmax (400) film.... the temp is pretty good. anyware from 65-80 will be ok. 68 is the best (if i remeber correctly) At 1:1 or 1:2 it sould work nicely... The time will depend on the temp.
Im sure others know much more than I, but thats my 2 cents.