Dear experts,
I am planning to convert my current electric baseboard heating system to natural gas. I live in mass, and my house is a typical split-entry with 1400 sf on main floor and 600sf of living space in a basement level. To avoid major demolitions the easiest setup seems to be to put a hydronic baseboard heating on a basement level and hydroair through the attic to heat the main floor. This also gives a nice option to have an air conditioner (actually I am thinking about putting a heat pump just to have an alternative/backup heat source). While doing research on available options I found HTP Versa Hydro boiler which seems to be almost an ideal match (I also kind of liked combi-boilers but to many people advised against) for what I need: DHW, hook to hydroair and single zone hydronic heating. What is a most appealing option for me is its size - I have a very limited space - utility room is fairly small - now it needs to accommodate only an electric water heater.
Unfortunately I could not find many reviews of Versa hydro - I guess it's kind of new and a bit unusual product.
If anybody is familiar with it I appreciate any information/opinion. In particular I am trying to answer the following:

1. Is there any advantage (assuming the same total cost) of going with "traditional" setup HE boiler+indirect heater lets say HTP has Elite FT110 boiler+ 45 (or 60) gallon indirect Superstor water tank.

2. How noisy is Versa? I could not find that in the specs; manufacturer could not provide this info either. It will be installed in a utility room next to my family room (split entry house) with just a regular wall in between. Noise would be a major factor. Would regular boiler (FT110) be quieter?

3. Does heat pump instead of just AC make sense (I am thinking about 2ton 2 stage carrier infinity unit with a variable air handler)? I live in mass. To be honest never heard about anybody having one here. But for probably $500 extra having alternative efficient (I assume in many cases cost should be comparable to gas) heat source to me sounds very reasonable. Am I missing anything?

4. I am thinking about making 2 zones for central air: main living area vs bedrooms. Will it make significant difference in heating cost and comfort for my 1400sf level to justify an extra cost for zoning?

5. I also found that Versa has a solar option which I got quite excited at first to keep options open for the future, but now I really not sure if it makes any sense from the cost view point. It adds couple grand only to the unit. Any opinion here?

6. Is anything else important or good alternative I should be thinking about?

Any information, opinions, suggestions and advises are very appreciated.
Thank you!