I think a good 1000-chip breakdown for a 3-table tournament would be 240/240/120/240/160 of T25/100/500/1000/5000 .
This enables you to do 30 stacks of 8/8/4/7 for T10K start with extra T1000 and T5000 chips available for deeper stacks/color ups/re-entry.
Alternatively, this would also be a good breakdown for 20 stacks of 12/12/5/6 if you like more chips in starting stacks and have fewer players..
But either way, this is just to illustrate that T25K are overkill in small-medium base T25 setups, so I wouldn't worry about a set maxing out at T5000 for the top denomination, unless your tournaments are significantly larger than this (say at least 40-50 entries+)
Now obviously if you go with higher bases, (T100, or my favorite T500) then you would obviously put T25K chips on your radar.