finally did mine
BGA gaskets were out of stock, bought proper ones from Honda(£50)
apparently valves were done before(bought jazz this year) as rubber gaskets seemed fine and could be reused

Most valves were too loose, but it's subject of individual perception
1/2" sockets are too wide for intake manifold nuts, ended up buying 12" 3/8" socket.
I did not notice significant difference in engine noise though