I did the Cache portages in a wet July/Aug...about 6 years ago or so?  Trousers to Cahce took us 6 hrs, double portaging.  Camped overnight on Cache.  Cache to Lindsay took us near 8 hours.  3 swamps in 2 days and they were bad, lost the trail several times.  Alot of the trail was near overgrown but doable.  Spent about 1 hour lost on Cache to Lindsay in a swamp.

I believe Paw did it the following year in near 1/2 those times....slightly less water.

Your times will vary given the water levels and beaver activity...for comparisson, we were mostly green and slow.