Hi Dave there a 6 smaller bolts to find 1 either side of the camchain tunnel under a puck i think ? they have a 10mm head and also cross head in the to use a screwdriver,
1 at the front of the head and 1 at the back of the head, also 2 more at either end of the head you should be able to see them down were the outer plugs go,
and yes the dowels can hold it all together,
i would just clean everything thouroughly all the oil ways will need cleaning out i use carb cleaner and compressed air to blow mine out you will be able to see all the oilways in the cam carriers etc just make sure they are clear
i'm lucky i have the Gordon frame kit fitted on my F1 so you can leave the rocker cover off while you prime the engine took about 10 kicks to get oil squirting into the cam carriers just gives you piece of mind that oil is getting were it should be ,
Honda gaskets are dear but i suppose if your doing it right you might as well spend the bit extra and get decent gaskets,
good luck and show us some photos
, cheers Mick.