I have a couple questions on my first outdoor grow.

1) I plan on planting one here and one there along a creek to lessen the chances of someone stumbling upon my grow. I've dug a dozen 3x3x3 holes and now I just need to fill them. The soil is extremely rocky, as in 80% rock so it went in the creek and I obviously must completely replace, not just amend it. I've seen a few mix suggestions but most of them have some things I don't have. Worm castings, for instance aren't sold anywhere around here and it wouldn't be economical to have some shipped. I'm limited by what my garden center sells, peat moss/verm potting mix, compost and manure (which is peat moss too) composted chicken shit, bone meal, fish emulsion, miracle gro, hydrated lime, etc. Can someone suggest a good mix, by parts please? I'd like to go organic if I can to start, but I plan on using non-organic ferts so I guess it doesn't matter too much.

2) As much $ as I spent on seeds for my first grow I'm a little wary of starting outside, especially since it's 45 degrees today and was 80 yesterday. I plan on using a heated mini greenhouse type seed germinator to start the seeds but I'm confused as to how long I have to wait before transplanting, and what my light source should be until that time. I was going to build a box to house the light and starting plants, but I had a couple old pentium 486 towers lying around, so I ripped the insides out and figured I'd use them. What kind of light source would I need, to get the plants to an age safe for translpant if I had four or five in each case? Would they be able to grow to a safe transplant age in the same medium they are germinated in?

I guess that's actually more than a couple questions, sorry if the numbering is a little misleading.

Thanks in advance
-Angus

Edit: Also, I bought a PH tester that also measures P N and K levels by parts per million (PPM) It lists acceptable rates on the back so I'd know if something was way out of wack, but if anyone knows what the plants would like in their veg and flowering stage, in PPM that would be amazing. Probably a long shot, it was only a couple bucks more than a regular digital PH tester so if I don't get any use out of it its not a huge loss

hello angus, i am the god of bush growing, and let me tell you this, on the side of creeks is a gret place to plant, and if your soil is rocky, thats even better now son, read carefully, dont worry about growing from green house, buy some potting mix and some pots and start your seeds off with them, if you can get hold of some Amonia and sea weed fertiliser, that is the best i found for bush, mix these together at 50ml of amonia to 20ml of sea weed, one you have this brew which i call JUNGLE JUICE, you then mix it with water at 50ml to 1L, and when there up to the stage where they are developing the buds, 100ml to 1L, i hope this works, STAY BUSH>

This mix has worked extremely well for me & everything is readily available at any home depot or hardware store.

Potting soil 40%.

Top soil 20%

Perlite 30%

Sand 10%

If im planting outdoors i mix vermiculite with perlite on a 50/50 ratio,i also use Peters brand 30/30/30 for ferts outdoors,peters makes great ferts.

Whatever you do use dolomite/gardening lime at a rate of 1 tablespoon per gallon of mix. Don't use the hydrated lime it is hot and will burn your plants!

4 parts potting soil
1 part bone meal
1 part fix emulsion
3 parts perlite

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bone meal isn't smart outdoors, it will attract animals