Hi ashliee, regarding the donor websites, i would say it depends on where are u located. UK girls here use sites such as Tadpole, but i don't think it works outside UK (not sure though).
About the OPKs, i also use the 'line-type', i know heaps of women who swore by the Smiley-type but they're just a bit too pricey for me. I would use around 10 strips per cycle together with the Saliva microscope (it's a small device size of a lipstick that looks at your estrogen levels and it's a 1 time investment of around $30, u can use it for years.) but of course u can use the cheap strips and then once u see the lines darkening, u can confirm with the smiley-type.
For charting, i suggest using Fertility Friend so u can post your chart and the girls here could analyse.
the best thing about charting is u can really see what's happening with your body and check whether u are ovulating or not. How long are your cycles in general?
I also suggest going throughthe 'fresh'-route as it's cheaper and could be more effective. But u really have to be careful in choosing your donor. Make sure about updated STD checks and if u aren't comfortable with NI, tell him that as well.