Hmmmmmmmm ... so ya want a response eh?
[SIZE=5][COLOR=DarkRed]Send 'em back![/COLOR][/SIZE]
They're somewhat underpowered for your intended purpose and will have you locked into shooting asa400 film in order to produce a semi-realistic f stop with an umbrella or other diffussion device.
It seems rather senseless to buy something you'll outgrow in a few weeks ... or less
You'd have actually been in better shape with Alien Bees, still entry level but at least 160/320/640 w/s and available with UV coatted flash tubes.
Calumet Travelites or Photogenic monolights would have been another 'valid' option
... jus' a thought