Can afford more frequent changes and the filters at the difference in cost between that and silkolene or similar which I was looking at. The fact it's your main transport is good test for it.
I'll be changing spark plugs, filters and oil very soon as its a new bike to me so peace of mind, apparently was last serviced last year so an annual would be worthwhile imo. While I'm in there I will spray some carb cleaner through while running and reset the tensioner. See what it sounds like, then give it some 2-3 gear fun to clear once warmed up. May check valve clearances if feeling brave (not done that before but doesn't look too bad).
Silencer needs replacing due to small leak I've discovered so that will be done shortly, good time then to balance the carbs I'm thinking.