[Antennas] Help on 5-BTV radials

[Cesar Gamez]

Hi,
 I'm new into ham radio, although done CB DX'ing some years ago (70's &
80's).
Hope somebody can give me some hints or help.
I've finally decided to put up a 5-BTV Hustler Vertical (resonator tuned)
antenna on my base. I've just got the antenna and planning to set it up next
weekend.
The antenna will lie on top of a 12 meter mast, sitting on my roof (2
stories high).
 The antenna manual clearly specifies putting up radials (2 for each band
minimum); but these are extremely long on the low freq. bands and since I'm
in a pretty small footprint house in a residential area, I'm not sure what
options I may have.
 My questions/ideas are:
1. No radials: the mast is not planned to be grounded, I'm afraid of severe
intereference at home and neighbors, even if using the ugly 1:1 balun
recommendation.
2. Attach 10m band radials (shortest, about 8 feet long): I will be using a
lot the antenna on 10m band locally, up to 100km distance radius max.,
although I'm also interested in the DX use. I'm wondering if the 10m will
help the multiples (20m, 40m and 80m bands) at all.
3. What frequency on 80m should I tune the antenna (for a newbie, like me?)
apparently the resonator has a tight tolerance on this.
4. What is the max. recommended SWR for safe transmission without burning
the equipment? I don't have a tuner, just a SWR meter and will transmit max.
100W.
 Thanks for your help.
 Regards, Cesar.