Phones question.

I'm opening a small retail business, and I have 4 phone lines.  
2 for voice, 1 for the CC machine, and 1 for fax (no handset 
on the fax machine, but I can return it, I haven't cracked the box).

I was considering getting a 2 line phone for the front of the store, 
and a 4 line for the back, so I can use the fax line as an 
outgoing phone line and not tie up the incoming voice lines.

Does anyone have any suggestions?

I'm not wanting to spend a huge amount of money, but I am 
looking at the Panasonic KX-TG4000B, which is basically a
4 line base phone with a 4 line handset (that has a separate base).
Problem: It's between $400 and $500, depending where I look.
That's a little steep, and it has an answering machine, which 
I don't need, as I have voicemail. (or should I dump the VM?)

OR, should i get a fax machine with a handset, and 2 2-line phones?

Any suggestions that you have will be very helpful,

Thanks,

Maggie
-- 
- Happiness is not having what you want, it's wanting what you have.