If you are just looking at the two options (Hegel/Marantz), I would also vote for the Marantz.
The Focal speakers are generally very easy to drive. However, I don't think the Focal's really do well in the lower frequencies - definitely not as strong/solid as other speakers (such as B&W, etc.)
In general terms and in my experience, the 100Hz dip (due to the speaker's lower impedance at these frequencies) really require a huge amount of amplifier current. This means, the more power supply you have, the better the amp will support these dips.
That being said, going from 70W to 110W is not a huge step in power. If it were me, I would actually look at getting a separate high-current amp first and use the 8005 as a preamp. Something in the 400-500 watt range (maybe even monoblocks). And then start putting in high-gauge power cords using rhodium plated connectors. As I have evolved my system over many years, I have had increased bass/midbass each time I focused on increasing amplifier power and power cord configuration. You are really not going to use all 500 watts, but it is the brute force / current you need to push these bass waveforms at the specific speaker impedance.