As I have renewed my interest in Bonsai I have taken a bit of a fancy to natives (mostly due to some of the trees I have seen on ausbonsai)

I paid a visit to the local council Native Nursery (Sutherland Shire) and purchased seven little $2.10 seedlings. I am going to put them into a larger black plastic pots with a mixture of bonsai potting mix, some river sand and some zeolite to give them some more soil to grow in and keep the water up to them. I plan to just wire the main trunk to get some shape into them before they get too big, is this the correct thing to do now?
I purchased the following species (mostly beacause I either liked the look of the tree or beacuse they were local to the area) and wanted to ask if any or all of them were totally unsuitable for Bonsai as I have no idea?
Allocausurina Diminuta (She Oak), found locally only in West Menai in Ironstone Heath in dry sandy or rock locations. They say it is a rare slow growing, long lived species
Allocasurina Littoralis (Black She Oak)
Tristanlopsis Laurina (Water Gum)
Callicoma Serratifolia (Black Wattle)
Elaecarpus Reticulatus (Blueberry Ash)
Banksia Spinulosa (Hairpin Banksia)
Callistemon Citrinus (Crimson Bottlebrush)
I plan on taking some pics later today and posting them in the progession section so I can keep a track of them and hopefully one day allow other newbies to benefit from them?
If anyone can offer some guidance on what to do to care for and shape these trees it would be greatly appreciated.
Mark