90/55 sounds like a good combination. In the old days I used things like 130/90, 100/90 and 100/55 H4 bulbs I had to change to the lower wattage low beam bulbs for around town as they got a bit hot, but changing them only took a few minutes (old fashioned round headlight). The 100/55 was a great compromise for all round use.
I have 60/55 +50 H4 Narvas in the ST11 and they are quite decent, even compared to 35W H4 HIDs. I do run 55W HIDs euro beam driving lights to cover distance riding though.