I have no idea about that company. Unless you live in a remote area, I would just go buy at one of the stores I mentioned.
As far as you nutes/plant problems: I would really try to get a post going in the plant problems section and catch the attention of some good growers. You will do this by posting at time like now, when people are in high concentration online. If you post at 2am for example, you won't get much traffic and your thread will get bumped down the list where noone will see it. Also, giving a fully detailed description of the problem/history will help. If you do the "WTF is this, HELP!" thing and force everyone to ask a lot of unneccesary questions you are not going to attact a lot of help or the real "talent".
I can give you some suggestions, but as I have said, I'm no expert. I don't want to overstep or take responsibilty for steering you in the wrong direction. That being said, I can say the following:
1) If you are going to grow in FFOF, you might as well get their nute line up (grow big, big bloom and tiger bloom). It might cost you a little, but if you are planning on continuing to grow and use FFOF, it will get used and you will want to have all of them for when you need them. If you're serious, invest now...half assing as you have probably figured out is a waste of time and money.
2) Because you are not pHing, we aren't going to know if your soil is cleared up or a lot of unanswered questions. So another distilled water when your soil dries out would probably be the conservative thing to do. This is something I would get additional feedback on as I'm sure someone else would say otherwise.
3) If you do #2 you will not be feeding and washing nutrients out of the soil ...deficiencies may occur. This is why i told you to post pics of the plants every other day or so to see what is going on. I also suggested getting a water mister because if something does go deficient doing a folliar feed may slow this down until your soil is remedied and ready to undergo a normal feeding schedule again.
4) To answer your question, flowering nutes are lower in N, higher in P. There's a lot of reading about what your plants need, but I will leave that up to you to find Guru's threads as my explanation will be shit comparitively speaking and I'm just plain not qualified to give it.
Some general things just in case:
1) Most people only water every 3 days or until the top 2 in of the pot is dry. Your schedule can change as the plants grow. Right now, I am averaging watering every 5 days. And when you water, you don't want throw a cup in. Water until you get some decent runoff through the holes in the bottom of the pots. I usually have to wait a bit to put them back in the box cause they are still leaking.
2)Assuming you can get back on track. Look at the nute schedule on your nutes. Do not add every day and start off using less than the reccomended dose on the bottle. Example: With fox farms if you are flower, you would use tiger bloom every other time you water. And prob big bloom in between. That can change, a lot is up to you and how the plants are doing ect.