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It shouldn't be necessary - it's really determined by how you intend to use it.  If you're using the connection for business purposes, then yeah, they'll push you towards a business account.  If you play it off as for pure personal/pleasure use, you'll have a better bet to get residential.  It's all in the user agreement / acceptable use policy dealio.  Also, if you may have difficulty getting a 2nd res account if you're looking to put them under the same name.

For sure.  This is the part of the AUP that i was referring to:

Unless you have specifically subscribed for commercial grade service, the ISP Service is provided to you for personal, non-commercial use only. The service cannot be used for any enterprise purpose whatsoever whether or not the enterprise is directed toward making a profit. If it is your intention to use this service for these purposes, please contact Operator to inquire whether commercial grade service programs are available.

You should be fine as long as you say it's just intended for pleasure use.

You should be good.  Installation prices differ from area to area....just give a call and ask.  It's pretty much non-negotiable.

Cool... lemme know how it goes.

Let's talk PM.