There is no reason why you shouldn't get perfectly good results with miniDV.
Presumably you will film & key in std resolution and scale it down for the web , which will be very forgiving.
I'm sure a bit of trial & error will help.
my best tips would be:
Shoot in progressive scan if you can
Always remember when you look through the viewfinder ,the trick is to get a significant separation between the edges of the subject and the background.
Wild hair & woolly clothing CAN be difficult areas.
If the transparent video is to end up on a white web page then consider shooting against a white wall.
If you have blond hair or very pale skin this could be a problem.
Paint the wall fluorescent green.
Get a roll of lino 'off-cut' from a DIY shed & paint the back fluorescent green.
Do not stand too close to the wall ( at least a couple of metres if you have the space ) . This will avoid shadows ( which will hinder good separation) and allow you to light the wall separately.
This is the bit that makes the most difference.
'std house lighting' does not sound good
Good quality video is always lit well and it shows in the end product.
You do not need pro lighting to get a good image, but it would make life a lot easier.( lighting the subject with 2-3 'warm' lights and the back wall with a 'cold ' light to help separation.)
Without enough lighting you will get artefacts , poor separation and the image will look 'flat'.
You can get perfectly acceptable results using cheap & cheerful lights from a DIY shed.
The problems will be light placement ( getting them high enough) and reducing the output which will probably involve moving them away from the subject or bouncing them off a white board, and colour temperature, which you can fix with white balance (cam)& colour controls in AE.( providing you don't have different temperatures hitting the subject)
I would look at getting a couple of fluorescent lights for the subject ( one for either side) and something to 'flood' the back wall.
Alternatively, if your wall is next to a window, maybe just something to light the back wall and a white board to bounce light back to the other side of the subject. But you will be in the hands of the weather & clouds etc.
Avoid shadows on the back wall.