Starting my first ever DWC just a week before holidays. What could possibly go wrong?

Ok, I have been growing in soil for years and decided to try DWC.
I have these beauties (6 of them in total), I don't have a proper tent available yet (I have a monster scrog flowering at the moment) and I'm gonna be away for 2 weeks, leaving in 2 weeks.

While I admit that my arrangements are terrible, I'm comitted to making it work (somehow).

This is my setup:
Tent 1.2m X 1.2m (47"x47"). I m going to be able to set this tent up in exactly one week.
I have 2 buckets of 10l (2,65 gal), 2 buckets of 20l (5,3 gal) and 2 buckets of 35l (9,2 gal).
I have an AC
I'm going to use 50% tap water 50% distilled

And here's what my plan looks like:
I have exactly one week to set things up, starting next week.
While I'm away I have arranged for a friend to come by and feed the plants.
I'm going to use GH Maxigro / Maxibloom, never used it before but I LOVE the idea of having to only mix one thing. I'm sure my friend will be able to do it too.
I was thinking of using 3 net pots for each bucket to fit my 6 seedlings. I'm not sure what size of bucket I should use. Any comments?
The first time my friend is going to attend, is 3-6 days after I leave. Does he need to change the water in the reservoir or only top it up?
Next time my friend will attend is another 6 days after the first time.
In total I will be away for 2 weeks. I think that I have read that the plants will be just fine with the reservoir not being changed for 2 weeks. Can anyone confirm?

Any input, comment, help is greatly appreciated.

I still don't know how I got myself into this

If you change it right b4 you leave it will be fine for two week especially since you have seedlings. They might not even need to top it off with them being so small

Bucsfan80 said:

If you change it right b4 you leave it will be fine for two week especially since you have seedlings. They might not even need to top it off with them being so small

Click to expand...

What bucket size should I have?
Is it true that bigger buckets=more stable solution?

giannoulis said:

What bucket size should I have?
Is it true that bigger buckets=more stable solution?

Click to expand...

My ph seems more stable in a bigger rez.

i would just get a 27 gal blk/yellow tote and put all 6 plants in it til you get home. your friend would probably just need to adjust pH

Ok here I am again, on holidays. I left the plants since Saturday. I have a sneaky camera inside the tent, here’s what I can see:

From what I can see, plants don’t look very happy to me. My friend is going tomorrow to have a look. What does he need to check? pH? Does he need to top up with water and add nutrients until he gets an EC of .8?

any help please

Unfortunately, it looks like time to start some new seeds; those are gonners.