I've always used Castrol Edge 5w40 in mine with HAMP oil filter, NGK iridium plugs, I have the Spoon magnetic bolts for engine and gearbox, remember to change the washers too, I bought a load of genuine Honda ones.
Gearbox oil Honda MTF3
Coolant Motul inugel the orange colour one
Brake and clutch fluid Motul RBF600
Cabin filter genuine Honda
Air filter I used ITG when it was standard airbox
I've used this stuff for years with no problems at all.
+1 for TorqueGT and Tegiwa also Area Motorsport, all good companies with quick delivery. Hope this helps.
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