In addition, the hood does not vent outside.

Interestingly, there is a vent (similar to a bathroom vent in a typical apartment, 100CFM) located 3 feet away from the vent where the filtered air comes out of the hood, so I see a potential to re-design and re-install a hood to utilize this external venting duct. To do so, we'll need to have a three feet pipe on the kitchen ceiling to run from the hood, to the external vent.

The current hood is also an insert style, so I'll get rid off it to install a new island hood.

The range is Bertazzoni Professional Series X365GGVNE. So I need a size 42" hood. Total BTU is 52,500, so I'll need at least 600 CFM. I'm thinking 900-1200 because it's island mount. Style wise, I want something that looks like this:
Zephyr Arc Duo Collection ADLE42ASX (less expensive model works too, but if this one really does a much better job, I can bite the bullet).

Now, do you have any better recommendations on a powerful and more quiet hood (has to look very similar to the above), and how should I incorporate the hood to my current venting situation (internal blower?)

How should I install it? Should I buy the hood myself, and then contact a local installer to work on the vent? Or should I contact a local kitchen designer for a quote? What's the proper procedure? How much does installation (including material) cost for a job like this?

Thank you very much for your advice.

You should at least choose the hood yourself balancing the three competing factors Performance, Aesthetics, Affordability. Then, if installation is out of your skill set, hire a HVAC team to install it and perform the necessary duct changes. They should be on-board before purchasing the hood to ensure that they see a way to install and duct it. There may be reasons, such as hidden beams, that would influence the choice of hood, ducting, and blower.

kas

Start by asking your neighbors what they have done for ventilation. And then get an HVAC expert in to examine the situation before you get too far into the design phase. Once you get their recommendation, you can approach the condo board about alterations to the unit's exterior. Good luck! Most boards aren't that willing to work with you on something like this.

Now, if I can NOT vent outside, which of the following two Zephyr is suitable for my needs?
ZRM-E42BS
ADL-E42ASX
The latter is almost twice as expensive, but with the same 600 CFM. I called Zephyr and I was told that the expensive model is made in Italy, thus more expensive. The motor is also made differently.
Anybody has any opinion on these? thanks.