1) Yes, that seat uses the harness up to 65lbs. But most kids outgrow seats by height and not weight.
2) No, your son is too small to forward face. It is recommended to rearface to the maximum limits of the seat. Which in your case would be 33lbs, if you decide to buy the
Blvd. Children are much more likely to be badly injured or even killed
forward facing. Please keep him
rearfacing as long as possible.
3) I have no idea what your car looks like, but I am almost sure it will fit. You can go to a store like babiesrus and actually try the seat in your car.
4) I personally have the
Britax Marathon. I love it, one thing about
Britax is that their seats are soooo easy to install. But of course there are other seats like the
Radian. It is the narrowest seat on the market. There is also the Evenflo Triumph Advance, it has the infinite adjust like the
Blvd. High harness, and weight limit. Thats all I can come up with for now. If I think of anything else, I will edit.
Even though your son will be 1 yr old, he is still too little to forward face. Like I stated above, he is safer
rearfacing. Much, much, safer. People think they must turn their kids at 1 yr and 20lbs. You dont have to. It is just the minimum requirement, but not best practice.
FYI, my
dd is 16 months old 24lbs and is happily
rearfacing in a
Marathon.
There is no rush to turn your son. He is safer that way.
Im sure a tech will chime in soon

Happy shopping!