nute question.

Can i mix supernatural bud blaster, Advanced Nutrients Overdrive, and Cutting Edge Solutions Sugaree all together?

You can mix anything you want together; barring the effects of hydrogen bonds and density.

but do you think that would be a good combination the week before flush?

And you are flushing, because you put so much damn other sheiot on your plants, or is this the only other sheiot?
You flush to save your plants, you flush if you over nute...
You don't flush because you think you will get rid of the excess nutes...
Get It?
Read this if you are worried about taste and smoke... a flush will not help either:

https://www.rollitup.org/harvesting-curing/514841-perfect-cure-every-time.html

and read this one while you are at it:

https://www.rollitup.org/harvesting-curing/516184-trichomes-harvesting.html

Good Luck....

Flush your shit down the drain, not your sheiot you are growing... Waste of time...

well i was just wondering if this would be a good combo for the end of flower?