trust me don`t go 4 a good buy go for a good product. Mountain Air filters are great, and so are vortex fans. I use both and have no worries. There are other good products out there (and bad ones) , but keep craftsmanship in mind as well as price.
I have run Can-Fan's high output before with no problems. I also hear great things about the Vortex another poster suggested. I would also buy this http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=43060. Its not pefect but it will allow you to control the speed of the fan. Most of the premium inlines do not have this built in.
As for a scrubber I say build your own they are very easy. Spend the leftover on the fan.