Post Flush Nutrients

With my work schedule I have only had time to revamp my grow area. Moving my plants away from the heat of my 1000W HPS.
Saturday I am planning to FLUSH my plants and re-pot them into 5 gal. buckets. As advised in another post. Then feed with 1/4 strength complete fertilizer.

Which fertilizer should I use? Nutrients are not my strong suit and I'm confused.
I Have; (A) 1.5-4-5 with 1% Calcium and .5% Magnesium
or (B) 10-15-10 with .10% Iron,.05% Manganese,.05% Zinc
or (C) 18-18-21 with .50% Magnesium,.05% Copper,.10% Iron,.05% Manganese,.05% zinc

I also plan to add
SUPERthrive Vitamins and Hormones
TARANTULA Beneficial Bacteria and
Molasses 8% Potassium, 10% Calcium, 15% Iron, 20% Magnesium

Plants are 18 days into Flowering. Still pretty healthy but some have discoloring of older leaves and a lighter green color overall.

All Advice is WELCOME and NEEDED, Thanks.

Dread its easier imo to not water or flush prior to repotting....Just makes it more messy. Let em' get dry use a knife to run around the inside on the pot and ease it out. Spray some superthrive around the rootball or dip it even then settle into its new home.....

Then i would Flush, THEN nute....No sense in nuting if ur gonna flush it out right? Thats how i do it anyway. GL. Nice to see another cancomite hailing from WA.

I'd flush immediately, feed with a weak mix of solution C (your most complete fert) and one drop per gallon superthrive. If you flush after the re-pot, all that crap is going to be passing through the fresh soil, you'll need way more water to flush it, and it will just sit there WET because the roots haven't gotten into the new pot yet to use the moisture. And that can lead to rot.

Tehn I would wait until the plants are rather dry and slip the rootball out for a re-pot.

Your first watering after the re-pot should be with the same mix plus 1 tablespoon per gallon unsulfured molasses.

Thank you; Cpt. Zissou and stinkyattic for the replies.

I got the Day off so I'm going to flush this morning and use the time to finish rewiring my revised grow space.
I should have taken more time in the planning phase then I wouldn't have to rebuild during a grow.
New set up adds 3' of headroom, 4' - 1' for tall 5gal buckets.
Thanks Again

Transplanted into 5gal containers today.
Plants are not as root-bound as I suspected, but getting there.
2 of the plants were still real soggy from the flush 2 days ago, glad I re-potted them. Looked like a good environment for root rot. The pots did not have water trays built in ,but the combination of poor drainage and heavy soil mix was a problem.

Transplanted into 5gal containers today.
Plants are not as root-bound as I suspected, but getting there.
2 of the plants were still real soggy from the flush 2 days ago, glad I re-potted them. Looked like a good environment for root rot. The pots did not have water trays built in ,but the combination of poor drainage and heavy soil mix was a problem.

Below you can see the roots of one, the dirt in the buds of a couple others.
Also you can see the Strawberry Cough visiting them in there new home for 12 hours. It just loves the bright light. It goes to its own home when it's bed time for the Northern Lights.

Thanks for the Advise. My fingers are crossed.